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Slavery is a system under which people are treated as property to be bought and sold, and are forced to work. Slaves can be held against their will from the time of their capture, purchase or birth, and deprived of the right to leave, to refuse to work, or to demand compensation. Historically, slavery was institutionally recognized by many societies; in more recent times, slavery has been outlawed in most societies but continues through the practices of debt bondage, indentured servitude, serfdom, domestic servants kept in captivity, certain adoptions in which children are forced to work as slaves, child soldiers, and forced marriage. Slavery is illegal in every country in the world, but there are still an estimated 29.8 million slaves worldwide.
Slavery predates written records and has existed in many cultures. Most slaves today are debt slaves, largely in South Asia, who are under debt bondage incurred by lenders, sometimes even for generations. Human trafficking is primarily used for forcing women and children into sex industries.
In pre-industrial societies, slaves and their labour were economically extremely important to those who benefitted from them. Slaves and serfs made up around three-quarters of the world's population at the beginning of the 19th century.
In modern mechanised societies, there is less need for sheer massive manpower; Norbert Wiener wrote that "mechanical labor has most of the economic properties of slave labor, though ... it does not involve the direct demoralizing effects of human cruelty."
- 1 Terminology
- 2 Types
- 3 History
- 4 Present day
- 5 Abolitionism
- 6 Remnants of slavery
- 7 Economics
- 8 Apologies
- 9 Other uses of the term
- 10 In film
- 11 See also
- 12 References
- 13 Bibliography
- 14 External links
The English word slave comes from Old French sclave, from the Medieval Latin sclavus, from the Byzantine Greek σκλάβος, which, in turn, comes from the ethnonym Slav, because in some early mediaeval wars many Slavs were captured and enslaved. An older theory connected it to the Greek verb skyleúo 'to strip a slain enemy'.
The word used to call a slave has also been utilized to express general dependency to someone else. In many cases, such as in ancient Persia, the situation and lives of such slaves could be better than those of other common citizens.
Chattel slavery, also called traditional slavery, is so named because people are treated as the personal property (chattel) of an owner and are bought and sold as if they were commodities. It is the original form of slavery and the least prevalent form of slavery today.
Debt bondage or bonded labor occurs when a person pledges himself or herself against a loan. The services required to repay the debt, and their duration, may be undefined. Debt bondage can be passed on from generation to generation, with children required to pay off their parents' debt. It is the most widespread form of slavery today. Debt bondage is most prevalent in South Asia.
Forced labor occurs when an individual is forced to work against his or her will, under threat of violence or other punishment, with restrictions on their freedom. Human trafficking is primarily for prostituting women and children and is the fastest growing form of forced labor, with Thailand, Cambodia, India, Brazil and Mexico have been identified as leading hotspots of commercial sexual exploitation of children.
A forced marriage is a marriage in which one or both of the parties is married against their will. In many places, the line between forced marriage and consensual marriage becomes blurred, because the social norms of many cultures dictate that one should never oppose the desire of one's parents/relatives in regard to the choice of a spouse; in such cultures it is not necessary for violence, threats, intimidation etc. to occur, the person simply "consents" to the marriage even if he/she does not want it, out of the implied social pressure and duty. The customs of bride price and dowry, that exist in many parts of the world, can lead to buying and selling people into marriage. Forced marriage is still practiced in parts of the world such South Asia, East Asia and Africa. Forced marriages also occur in immigrant communities in Europe, United States, Canada and Australia. Marriage by abduction occurs in many place in the world today, with a national average of 69% of marriages in Ethiopia being through abduction.
A sham marriage is a marriage of convenience entered into with the intent of obtaining various social or legal advantages (often tied to immigration status). While many of these marriages occur with the consent of both parties, in the European Union there exists a trafficking industry which supplies brides (often from former Communist countries which are EU members - especially the Baltic States) to foreign students or workers in EU countries (often from the Asian continent) so that these men can remain in the EU.
Early and forced marriage are defined as forms of modern-day slavery by the International Labour Organisation. The countries with the highest rates of child marriage are: Niger (75%), Central African Republic and Chad (68%), and Bangladesh (66%).
Evidence of slavery predates written records, and has existed in many cultures. Prehistoric graves from about 8000 BC in Lower Egypt suggest that a Libyan people enslaved a San-like tribe. Slavery is rare among hunter-gatherer populations. Mass slavery also requires economic surpluses and a high population density to be viable. Due to these factors, the practice of slavery would have only proliferated after the invention of agriculture during the Neolithic Revolution about 11,000 years ago.
In the earliest known records slavery is treated as an established institution. The Code of Hammurabi (ca. 1760 BC), for example, prescribed death for anyone who helped a slave to escape or who sheltered a fugitive. The Bible mentions slavery as an established institution.
Slavery was known in almost every ancient civilization, and society, including Sumer, Ancient Egypt, Ancient China, the Akkadian Empire, Assyria, Ancient India, Ancient Greece, the Roman Empire, the Islamic Caliphate, the Hebrew kingdoms in Palestine, and the pre-Columbian civilizations of the Americas. Such institutions included debt-slavery, punishment for crime, the enslavement of prisoners of war, child abandonment, and the birth of slave children to slaves.
Records of slavery in Ancient Greece go as far back as Mycenaean Greece. It is certain that Classical Athens had the largest slave population, with as many as 80,000 in the 6th and 5th centuries BC; two to four-fifths of the population were slaves. As the Roman Republic expanded outward, entire populations were enslaved, thus creating an ample supply from all over Europe and the Mediterranean. Greeks, Illyrians, Berbers, Germans, Britons, Thracians, Gauls, Jews, Arabs, and many more were slaves used not only for labour, but also for amusement (e. g. gladiators and sex slaves). This oppression by an elite minority eventually led to slave revolts (see Roman Servile Wars); the Third Servile War led by Spartacus being the most famous and severe.
By the late Republican era, slavery had become a vital economic pillar in the wealth of Rome, as well as a very significant part of Roman society. At the least, some 25% of the population of Ancient Rome was enslaved. According to some scholars, slaves represented 35% or more of Italy's population. In the city of Rome alone, under the Roman Empire, there were about 400,000 slaves. During the millennium from the emergence of the Roman Empire to its eventual decline, at least 100 million people were captured or sold as slaves throughout the Mediterranean and its hinterlands.
Large-scale trading in slaves was mainly confined to the South and East of early medieval Europe: the Byzantine Empire and the Muslim world were the destinations, while pagan Central and Eastern Europe (along with the Caucasus and Tartary) were important sources. Viking, Arab, Greek, and Radhanite Jewish merchants were all involved in the slave trade during the Early Middle Ages. The trade in European slaves reached a peak in the 10th century following the Zanj rebellion which dampened the use of African slaves in the Arab world.
Medieval Spain and Portugal were the scene of almost constant Muslim invasion of the predominantly Christian area. Periodic raiding expeditions were sent from Al-Andalus to ravage the Iberian Christian kingdoms, bringing back booty and slaves. In raid against Lisbon, Portugal in 1189, for example, the Almohad caliph Yaqub al-Mansur took 3,000 female and child captives, while his governor of Córdoba, in a subsequent attack upon Silves, Portugal in 1191, took 3,000 Christian slaves. From the 11th to the 19th century, North African Barbary Pirates engaged in Razzias, raids on European coastal towns, to capture Christian slaves to sell at slave markets in places such as Algeria and Morocco.
In Britain, slavery continued to be practiced following the fall of Rome and sections of Hywel the Good's laws dealt with slaves in medieval Wales. The trade particularly picked up after the Viking invasions, with major markets at Chester and Bristol supplied by Danish, Mercian, and Welsh raiding of one another's borderlands. At the time of the Domesday Book (1086), nearly 10% of the English population were slaves. Slavery in early medieval Europe was so common that the Roman Catholic Church repeatedly prohibited it — or at least the export of Christian slaves to non-Christian lands was prohibited at e. g. the Council of Koblenz (922), the Council of London (1102), and the Council of Armagh (1171). In 1452, Pope Nicholas V issued the papal bull Dum Diversas, granting the kings of Spain and Portugal the right to reduce any "Saracens, pagans and any other unbelievers" to perpetual slavery, legitimizing the slave trade as a result of war. The approval of slavery under these conditions was reaffirmed and extended in his Romanus Pontifex bull of 1455. However, Pope Paul III forbade enslavement of the native Americans in 1537 in his papal bull Sublimus Dei. Dominican friars who arrived at the Spanish settlement at Santo Domingo strongly denounced the enslavement of the local native Americans. Along with other priests, they opposed their treatment as unjust and illegal in an audience with the Spanish king and in the subsequent royal commission.
The Byzantine-Ottoman wars and the Ottoman wars in Europe brought large numbers of slaves into the Islamic world. From the mid to late 14th, through early 18th centuries, the Ottoman devşirme–janissary system enslaved and forcibly converted to Islam an estimated 500,000 to one million non–Muslim (primarily Balkan Christian) adolescent males. After the Battle of Lepanto approximately 12,000 Christian galley slaves were freed from the Ottoman fleet. A few years later Cervantes, who later wrote the famous book Don Quixote, was captured by corsairs and enslaved in Algiers, attempted to escape and was eventually ransomed; he wrote about the plight of Christian slaves in his fiction. Eastern Europe suffered a series of Tatar invasions, the goal of which was to loot and capture slaves into jasyr. Seventy-five Crimean Tatar raids were recorded into Poland–Lithuania between 1474 and 1569. There were more than 100,000 Russian captives in the Kazan Khanate alone in 1551.
Approximately 10–20% of the rural population of Carolingian Europe consisted of slaves. In Western Europe slavery largely disappeared by the later Middle Ages. The trade of slaves in England was made illegal in 1102, although England went on to become very active in the lucrative Atlantic slave trade from the seventeenth to the early nineteenth century. Thralldom in Scandinavia was finally abolished in the mid-14th century. Slavery persisted longer in Eastern Europe. Slavery in Poland was forbidden in the 15th century; in Lithuania, slavery was formally abolished in 1588; they were replaced by the second serfdom. In Kievan Rus and Muscovy, the slaves were usually classified as kholops.
In early Islamic states of the Western Sudan (present-day West Africa), including Ghana (750–1076), Mali (1235–1645), Segou (1712–1861), and Songhai (1275–1591), about a third of the population were enslaved.
Ibn Battuta indicates several times that he was given or purchased slaves. The great 14th-century scholar Ibn Khaldun, wrote: "the Black nations are, as a rule, submissive to slavery, because (Blacks) have little that is (essentially) human and possess attributes that are quite similar to those of dumb animals". Slaves were purchased or captured on the frontiers of the Islamic world and then imported to the major centers, where there were slave markets from which they were widely distributed. In the 9th and 10th centuries, the black Zanj slaves may have constituted at least a half of the total population in lower Iraq. At the same time, many tens of thousands of slaves in the region were also imported from Central Asia and the Caucasus. Many slaves were taken in the wars with the Christian nations of medieval Europe.
Author David P. Forsythe has written: "In 1649 up to three-quarters of Muscovy's peasants, or 13 to 14 million people, were serfs whose material lives were barely distinguishable from slaves. Perhaps another 1.5 million were formally enslaved, with Russian slaves serving Russian masters. " Slavery remained a major institution in Russia until 1723, when Peter the Great converted the household slaves into house serfs. Russian agricultural slaves were formally converted into serfs earlier in 1679. Russia's more than 23 million privately held serfs were freed from their lords by an edict of Alexander II in 1861. State-owned serfs were emancipated in 1866.
Until the late 18th century, the Crimean Khanate (a Muslim Tatar state) maintained a massive slave trade with the Ottoman Empire and the Middle East, exporting about 2 million slaves from Poland-Lithuania and Russia over the period 1500-1700.
In the 19th century at least half the population was enslaved among the Duala of the Cameroon, the Igbo and other peoples of the lower Niger, the Kongo, and the Kasanje kingdom and Chokwe of Angola. Among the Ashanti and Yoruba a third of the population consisted of enslaved people.
The population of the Kanem (1600–1800) was about a third-enslaved. It was perhaps 40% in Bornu (1580–1890). Between 1750 and 1900 from one- to two-thirds of the entire population of the Fulani War states consisted of slaves.
The population of the Sokoto caliphate formed by Fulanis and Hausas in northern Nigeria and Cameroon was half-slave in the 19th century. Between 65% to 90% population of Arab-Swahili Zanzibar was enslaved. The Swahili-Arab slave trade reached its height about 150 years ago, when, for example, approximately 20,000 slaves were considered to be carried yearly from Nkhotakota on Lake Malawi to Kilwa. Roughly half the population of Madagascar was enslaved.
According to the Encyclopedia of African History, "It is estimated that by the 1890s the largest slave population of the world, about 2 million people, was concentrated in the territories of the Sokoto Caliphate. The use of slave labor was extensive, especially in agriculture. " The Anti-Slavery Society estimated there were 2 million slaves in Ethiopia in the early 1930s out of an estimated population of between 8 and 16 million.
Hugh Clapperton in 1824 believed that half the population of Kano were enslaved people. W. A. Veenhoven wrote: "The German doctor, Gustav Nachtigal, an eye-witness, believed that for every slave who arrived at a market three or four died on the way ... Keltie (The Partition of Africa, London, 1920) believes that for every slave the Arabs brought to the coast at least six died on the way or during the slavers' raid. Livingstone puts the figure as high as ten to one. "
One of the most famous slave traders on the eastern Zanj (Bantu) coast was Tippu Tip, who was himself the grandson of a slave. The prazeros slave traders, descendants of Portuguese and Africans, operated along the Zambezi. North of the Zambezi, the waYao and Makua people played a similar role as professional slave raiders and traders. The Nyamwezi slave traders operated further north under the leadership of Msiri and Mirambo.
In Constantinople about one-fifth of the population consisted of slaves. The city was a major center of the slave trade in the 15th and later centuries. By 1475 most of the slaves were provided by Tatar raids on Slavic villages. It has been estimated that some 200,000 slaves – mainly Circassians – were imported into the Ottoman Empire between 1800 and 1909. As late as 1908, women slaves were still sold in the Ottoman Empire. A slave market for captured Russian and Persian slaves was centred in the Central Asian khanate of Khiva. In the early 1840s, the population of the Uzbek states of Bukhara and Khiva included about 900,000 slaves. Darrel P. Kaiser wrote, "Kazakh-Kirghiz tribesmen kidnapped 1573 settlers from colonies [German settlements in Russia] in 1774 alone and only half were successfully ransomed. The rest were killed or enslaved. "
According to Sir Henry Bartle Frere (who sat on the Viceroy's Council), there were an estimated 8 or 9 million slaves in India in 1841. About 15% of the population of Malabar were slaves. Slavery was abolished in British India by the Indian Slavery Act V. of 1843.
In East Asia, the Imperial government formally abolished slavery in China in 1906, and the law became effective in 1910. Slave rebellion in China at the end of the 17th and the beginning of the 18th century was so extensive that owners eventually converted the institution into a female-dominated one. The Nangzan in Tibetan history were, according to Chinese sources, hereditary household slaves.
Indigenous slaves existed in Korea. Slavery was officially abolished with the Gabo Reform of 1894 but continued in reality until 1930. During the Joseon Dynasty (1392–1910) about 30% to 50% of the Korean population were slaves. In late 16th century Japan slavery as such was officially banned, but forms of contract and indentured labor persisted alongside the period penal codes' forced labor.
In Southeast Asia, a quarter to a third of seventeenth- to twentieth-century populations in some areas of Thailand and Burma were slaves. The hill tribe people in Indochina were "hunted incessantly and carried off as slaves by the Siamese (Thai), the Anamites (Vietnamese), and the Cambodians. " A Siamese military campaign in Laos in 1876 was described by a British observer as having been "transformed into slave-hunting raids on a large scale". The census, taken in 1879, showed that 6% of the population in the Malay sultanate of Perak were slaves. Enslaved people made up about two-thirds of the population in part of North Borneo in the 1880s.
Slavery in the Americas had a contentious history, and played a major role in the history and evolution of some countries, triggering at least one revolution and one civil war, as well as numerous rebellions. The Aztecs had slaves. Other Amerindians, such as the Inca of the Andes, the Tupinambá of Brazil, the Creek of Georgia, and the Comanche of Texas, also owned slaves.
Slavery was prominent in Africa, across the Atlantic Ocean from the Americas, long before the beginnings of the transatlantic slave trade. The maritime town of Lagos was the first slave market created in Portugal (one of the earliest colonizers of the Americas) for the sale of imported African slaves – the Mercado de Escravos, opened in 1444. In 1441, the first slaves were brought to Portugal from northern Mauritania.
By 1552, black African slaves made up 10% of the population of Lisbon. In the second half of the 16th century, the Crown gave up the monopoly on slave trade and the focus of European trade in African slaves shifted from import to Europe to slave transports directly to tropical colonies in the Americas – in the case of Portugal, especially Brazil. In the 15th century one-third of the slaves were resold to the African market in exchange of gold.
In order to establish itself as an American empire Spain had to fight against the relatively powerful civilizations of the New World. The Spanish conquest of the indigenous peoples in the Americas included using the Natives as forced labour. The Spanish colonies were the first Europeans to use African slaves in the New World on islands such as Cuba and Hispaniola, see Atlantic slave trade.
Bartolomé de Las Casas a 16th-century Dominican friar and Spanish historian participated in campaigns in Cuba (at Bayamo and Camagüey) and was present at the massacre of Hatuey; his observation of that massacre led him to fight for a social movement away from the use of natives as slaves and towards the importation of African Blacks as slaves. Also, the alarming decline in the native population had spurred the first royal laws protecting the native population (Laws of Burgos, 1512–1513).
The first African slaves arrived in Hispaniola in 1501. In 1518, Charles I of Spain agreed to ship slaves directly from Africa. England played a prominent role in the Atlantic slave trade. The "slave triangle" was pioneered by Francis Drake and his associates. A black man named Anthony Johnson of Virginia first introduced permanent black slavery in the 1650s by becoming the first holder in America of permanent black slaves. By 1750, slavery was a legal institution in all of the 13 American colonies, and the profits of the slave trade and of West Indian plantations amounted to 5% of the British economy at the time of the Industrial Revolution. 
The Transatlantic slave trade peaked in the late 18th century, when the largest number of slaves were captured on raiding expeditions into the interior of West Africa. These expeditions were typically carried out by African kingdoms, such as the Oyo empire (Yoruba), the Ashanti Empire, the kingdom of Dahomey, and the Aro Confederacy. Europeans rarely entered the interior of Africa, due to fierce African resistance. The slaves were brought to coastal outposts where they were traded for goods. A significant portion of African Americans in North America are descended from Mandinka people. Through a series of conflicts, primarily with the Fulani Jihad States, about half of the Senegambian Mandinka were converted to Islam while as many as a third were sold into slavery to the Americas through capture in conflict.
An estimated 12 million Africans arrived in the Americas from the 16th to the 19th centuries. Of these, an estimated 645,000 were brought to what is now the United States. The usual estimate is that about 15% of slaves died during the voyage, with mortality rates considerably higher in Africa itself in the process of capturing and transporting indigenous peoples to the ships. Approximately 6 million black Africans were killed by others in tribal wars.
The white citizens of Virginia decided to treat the first Africans in Virginia as indentured servants. Over half of all European immigrants to Colonial America during the 17th and 18th centuries arrived as indentured servants. The transformation from indentured servitude to slavery was a gradual process in Virginia. The earliest legal documentation of such a shift was the case of John Punch in 1640 where a negro, John Punch, was sentenced to lifetime slavery for attempting to run away. This case also marked the disparate treatment of Africans as held by the Virginia County Court. After 1640, planters started to ignore the expiration of indentured contracts and kept their servants as slaves for life. This was demonstrated by the case Johnson v. Parker where the court ruled that John Casor, an indentured servant, be returned to Johnson who claimed that Casor belonged to him for his life. According to the 1860 U. S. census, 393,975 individuals, representing 8% of all US families, owned 3,950,528 slaves. One-third of Southern families owned slaves.
The largest number of slaves were shipped to Brazil. In the Spanish viceroyalty of New Granada, corresponding mainly to modern Panama, Colombia, and Venezuela, the free black population in 1789 was 420,000, whereas African slaves numbered only 20,000. Free blacks also outnumbered slaves in Brazil. By contrast, in Cuba free blacks made up only 15% in 1827; and in the French colony of Saint-Domingue (present-day Haiti) it was a mere 5% in 1789. Some half-million slaves, most of them born in Africa, worked the booming plantations of Saint-Domingue.
Author Charles Rappleye argued that
In the West Indies in particular, but also in North and South America, slavery was the engine that drove the mercantile empires of Europe..It appeared, in the eighteenth century, as universal and immutable as human nature.
Although the trans-Atlantic slave trade ended shortly after the American Revolution, slavery remained a central economic institution in the Southern states of the United States, from where slavery expanded with the westward movement of population. Historian Peter Kolchin wrote, "By breaking up existing families and forcing slaves to relocate far from everyone and everything they knew" this migration "replicated (if on a reduced level) many of [the] horrors" of the Atlantic slave trade.
Historian Ira Berlin called this forced migration the Second Middle Passage. Characterizing it as the "central event" in the life of a slave between the American Revolution and the Civil War, Berlin wrote that whether they were uprooted themselves or simply lived in fear that they or their families would be involuntarily moved, "the massive deportation traumatized black people, both slave and free. "
By 1860, 500,000 slaves had grown to 4 million. As long as slavery expanded, it remained profitable and powerful and was unlikely to disappear. Although complete statistics are lacking, it is estimated that 1,000,000 slaves moved west from the Old South between 1790 and 1860.
Most of the slaves were moved from Maryland, Virginia, and the Carolinas. Michael Tadman, in a 1989 book Speculators and Slaves: Masters, Traders, and Slaves in the Old South, indicates that 60–70% of interregional migrations were the result of the sale of slaves. In 1820, a child in the Upper South had a 30% chance to be sold south by 1860.
According to Robert Davis between 1 million and 1.25 million Europeans were captured by Barbary pirates and sold as slaves in North Africa and Ottoman Empire between the 16th and 19th centuries. There was also an extensive trade in Christian slaves in the Black Sea region for several centuries until the Crimean Khanate was destroyed by the Russian Empire in 1783. In the 1570s close to 20,000 slaves a year were being sold in the Crimean port of Kaffa. The slaves were captured in southern Russia, Poland-Lithuania, Moldavia, Wallachia, and Circassia by Tatar horsemen in a trade known as the "harvesting of the steppe". In Podolia alone, about one-third of all the villages were destroyed or abandoned between 1578 and 1583. Some researchers estimate that altogether more than 3 million people were captured and enslaved during the time of the Crimean Khanate. It is estimated that up to 75% of the Crimean population consisted of slaves or freedmen.
The Arab slave trade lasted more than a millennium. As recently as the early 1960s, Saudi Arabia's slave population was estimated at 300,000. Along with Yemen, the Saudis abolished slavery only in 1962. Slaves in the Arab World came from many different regions, including Sub-Saharan Africa (mainly Zanj), the Caucasus (mainly Circassians), Central Asia (mainly Tartars), and Central and Eastern Europe (mainly Saqaliba).
Under Omani Arabs Zanzibar became East Africa's main slave port, with as many as 50,000 enslaved Africans passing through every year during the 19th century. Some historians estimate that between 11 and 18 million African slaves crossed the Red Sea, Indian Ocean, and Sahara Desert from 650 AD to 1900 AD. Eduard Rüppell described the heavy mortality of the enslaved Sudanese before reaching Egypt: "after the Daftardar bey's 1822 campaign in the southern Nuba mountains, nearly 40,000 slaves were captured. However, through bad treatment, disease and desert travel barely 5000 made it to Egypt. "
Central and Eastern European slaves were generally known as Saqaliba (i. e., Slavs). The Moors, starting in the 8th century, also raided coastal areas around the Mediterranean and Atlantic Ocean, and became known as the Barbary pirates. It is estimated that they captured 1.25 million white slaves from Western Europe and North America between the 16th and 19th centuries. The mortality rate was very high. For instance, when plague broke out in Algiers' overcrowded slave pens in 1662, some said that it carried off 10,000–20,000 of the city's 30,000 captives.
Even though slavery is now outlawed in all countries, the number of slaves today remains as high as 12 to 29.8 million. Several estimates of the number of slaves in the world have been provided. According to a broad definition of slavery used by Kevin Bales of Free the Slaves (FTS), an advocacy group linked with Anti-Slavery International, there were 27 million people in slavery in 1999, spread all over the world. In 2005, the International Labour Organization provided an estimate of 12.3 million forced labourers in the world. Siddharth Kara has also provided an estimate of 28.4 million slaves at the end of 2006 divided into the following three categories: bonded labour/debt bondage (18.1 million), forced labour (7.6 million), and trafficked slaves (2.7 million). Kara provides a dynamic model to calculate the number of slaves in the world each year, with an estimated 29.2 million at the end of 2009. A report by the Walk Free Foundation in 2013, found India had the highest number of slaves, at 14 million, while Mauritania had the highest proportion in slavery, at 4%.
Examples of modern slavery are numerous. In 2008, the Nepalese government abolished the Haliya system of forced labour, freeing about 20,000 people. An estimated 40 million people in India, most of them Dalits or "untouchables", are bonded workers, working in slave-like conditions in order to pay off debts. Though slavery was officially abolished in China in 1910, the practice continues unofficially in some regions of the country. In June and July 2007, 550 people who had been enslaved by brick manufacturers in Shanxi and Henan were freed by the Chinese government. Among those rescued were 69 children. In response, the Chinese government assembled a force of 35,000 police to check northern Chinese brick kilns for slaves, sent dozens of kiln supervisors to prison, punished 95 officials in Shanxi province for dereliction of duty, and sentenced one kiln foreman to death for killing an enslaved worker. The North Korean government operates six large political prison camps, where political prisoners and their families (around 200,000 people) in lifelong detention are subjected to hard slave labor, torture and inhumane treatment. In 2010 in Brazil more than 5,000 slaves were rescued by authorities as part of a government initiative to eradicate slavery. Poverty has forced at least 225,000 Haitian children to work as restavecs (unpaid household servants); the United Nations considers this to be a form of slavery.
In Mauritania, the last country to abolish slavery (in 1981), it is estimated that up to 600,000 men, women and children, or 20% of the population, are enslaved with many used as bonded labour. Slavery in Mauritania was criminalized in August 2007. The Middle East Quarterly reports that slavery is still endemic in Sudan. It is estimated that as many as 200,000 people had been enslaved during the Second Sudanese Civil War. In Niger, slavery is also a current phenomenon. A Nigerien study has found that more than 800,000 people are enslaved, almost 8% of the population. Niger officially abolished slavery in 2003. Many pygmies in the Republic of Congo and Democratic Republic of Congo belong from birth to Bantus in a system of slavery. Some tribal sheiks in Iraq still keep blacks, called Abd, which means servant or slave in Arabic, as slaves. Child slavery has commonly been used in the production of cash crops and mining. According to the US Department of State, more than 109,000 children were working on cocoa farms alone in Côte d'Ivoire (Ivory Coast) in "the worst forms of child labor" in 2002.
Trafficking in human beings (also called human trafficking) is one method of obtaining slaves. Victims are typically recruited through deceit or trickery (such as a false job offer, false migration offer, or false marriage offer), sale by family members, recruitment by former slaves, or outright abduction. Victims are forced into a "debt slavery" situation by coercion, deception, fraud, intimidation, isolation, threat, physical force, debt bondage or even force-feeding with drugs of abuse to control their victims. "Annually, according to U. S. Government-sponsored research completed in 2006, approximately 800,000 people are trafficked across national borders, which does not include millions trafficked within their own countries. Approximately 80 percent of transnational victims are women and girls and up to 50 percent are minors", reports the US Department of State in a 2008 study.
While the majority of trafficking victims are women, and sometimes children, who are forced into prostitution (in which case the practice is called sex trafficking), victims also include men, women and children who are forced into manual labour. Due to the illegal nature of human trafficking, its exact extent is unknown. A US Government report published in 2005, estimates that 600,000 to 800,000 people worldwide are trafficked across borders each year. This figure does not include those who are trafficked internally. Another research effort revealed that between 1.5 million and 1.8 million individuals are trafficked either internally or internationally each year, 500,000 to 600,000 of whom are sex trafficking victims.
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Slavery has existed, in one form or another, through the whole of recorded human history — as have, in various periods, movements to free large or distinct groups of slaves.
Ashoka, who ruled the Maurya Empire from 269 - 232 BCE, abolished the slave trade but not slavery. The Qin dynasty, which ruled China from 221 to 206 BC, abolished slavery and discouraged serfdom. However, many of its laws were overturned when the dynasty was overthrown. Slavery was again abolished, by Wang Mang, in China in 17 C.E but was reinstituted after his assassination.
The Spanish colonization of the Americas sparked a discussion about the right to enslave native Americans. A prominent critic of slavery in the Spanish New World colonies was Bartolomé de las Casas, who opposed the enslavement of Native Americans, and later also of Africans in America.
One of the first protests against the enslavement of Africans came from German and Dutch Quakers in Pennsylvania in 1688. One of the most significant milestones in the campaign to abolish slavery throughout the world occurred in England in 1772, with British judge Lord Mansfield, whose opinion in Somersett's Case was widely taken to have held that slavery was illegal in England. This judgement also laid down the principle that slavery contracted in other jurisdictions (such as the American colonies) could not be enforced in England. In 1777, Vermont became the first portion of what would become the United States to abolish slavery (at the time Vermont was an independent nation). In 1794, under the Jacobins, Revolutionary France abolished slavery. There were celebrations in 2007 to commemorate the 200th anniversary of the Abolition of the slave trade in the United Kingdom through the work of the British Anti-Slavery Society.
William Wilberforce received much of the credit although the groundwork was an anti-slavery essay by Thomas Clarkson. Wilberforce was also urged by his close friend, Prime Minister William Pitt the Younger, to make the issue his own, and was also given support by reformed Evangelical John Newton. The Slave Trade Act was passed by the British Parliament on March 25, 1807, making the slave trade illegal throughout the British Empire, Wilberforce also campaigned for abolition of slavery in the British Empire, which he lived to see in the Slavery Abolition Act 1833. After the 1807 act abolishing the slave trade was passed, these campaigners switched to encouraging other countries to follow suit, notably France and the British colonies. In 1839, the world's oldest international human rights organization, Anti-Slavery International, was formed in Britain by Joseph Sturge, which campaigned to outlaw slavery in other countries.
Between 1808 and 1860, the British West Africa Squadron seized approximately 1,600 slave ships and freed 150,000 Africans who were aboard. Action was also taken against African leaders who refused to agree to British treaties to outlaw the trade, for example against "the usurping King of Lagos", deposed in 1851. Anti-slavery treaties were signed with over 50 African rulers.
In the United States, abolitionist pressure produced a series of small steps towards emancipation. After January 1, 1808, the importation of slaves into the United States was prohibited, but not the internal slave trade, nor involvement in the international slave trade externally. Legal slavery persisted; and those slaves already in the U. S. were legally emancipated only in 1863. Many American abolitionists took an active role in opposing slavery by supporting the Underground Railroad. Violence soon erupted, with the anti-slavery forces led by John Brown, and Bleeding Kansas, involving anti-slavery and pro-slavery settlers, became a symbol for the nationwide clash over slavery. By 1860 the total number of slaves reached almost four million, and the American Civil War, beginning in 1861, led to the end of slavery in the United States.
In the 1860s, David Livingstone's reports of atrocities within the Arab slave trade in Africa stirred up the interest of the British public, reviving the flagging abolitionist movement. The Royal Navy throughout the 1870s attempted to suppress "this abominable Eastern trade", at Zanzibar in particular. In 1905, the French abolished indigenous slavery in most of French West Africa.
On December 10, 1948, the United Nations General Assembly adopted the Universal Declaration of Human Rights, which declared freedom from slavery is an internationally recognized human right. Article 4 of the Universal Declaration of Human Rights states:
No one shall be held in slavery or servitude; slavery and the slave trade shall be prohibited in all their forms.
Groups such as the American Anti-Slavery Group, Anti-Slavery International, Free the Slaves, the Anti-Slavery Society, and the Norwegian Anti-Slavery Society continue to campaign to rid the world of slavery.
Remnants of slavery
In the case of freed slaves of the United States, many became share croppers and indentured servants. In this manner, some became tied to the very parcel of land into which they had been born a slave having little freedom or economic opportunity due to Jim Crow laws which perpetuated discrimination, limited education, promoted persecution without due process and resulted in continued poverty. Fear of reprisals such as injust incarcerations and lynchings deterred upward mobility further.
Generations of descendants from slavery are affected by bigotry and prejudice and limited opportunities. Domination and control virtually guarantee that the lowest element of society will live at or below the level of chattel slaves. This is particularly noticeable in nations that sought to enforce complete equality, but necessarily failed. In the Soviet Union from the time of Lenin until after Stalin, the GULAG Archipelago, a massive system of labor and penal concentration camps, kept millions of state slaves in conditions far worse than American antebellum slavery. Critics of American incarceration levels sometimes refer to modern American prison systems as "New Age Slavery" ... followed by "The New Jim Crow." A comparison between slavery and incarceration involves numerous similarities. The continuance of slavery in one form or another across the world reflects inevitable social stratification and geographic disparities. The means of enforcement and reasons for domination change through the centuries. Economic, political, military, demographic and social forces invariably force one segment of society to the bottom, and for some years that subordination may appear as a type of slavery, even though the institution of chattel slavery has been legally abolished. As "slaves" are continually freed, other groups, peoples, and individuals inevitably take their place at the bottom.
In November 2006, the International Labour Organization announced it will be seeking "to prosecute members of the ruling Myanmar junta for crimes against humanity" over the continuous unfree labour of its citizens by the military at the International Court of Justice. According to the International Labor Organization (ILO), an estimated 800,000 people are subject to forced labour in Myanmar.
The Ecowas Court of Justice is hearing the case of Hadijatou Mani in late 2008, where Ms. Mani hopes to compel the government of Niger to end slavery in its jurisdiction. Cases brought by her in local courts have failed so far.
Economists have attempted to model the circumstances under which slavery (and variants such as serfdom) appear and disappear. One observation is that slavery becomes more desirable for landowners where land is abundant but labour is scarce, such that rent is depressed and paid workers can demand high wages. If the opposite holds true, then it becomes more costly for landowners to have guards for the slaves than to employ paid workers who can only demand low wages due to the amount of competition. Thus, first slavery and then serfdom gradually decreased in Europe as the population grew, but were reintroduced in the Americas and in Russia as large areas of new land with few people became available. In his books, Time on the Cross and Without Consent or Contract: the Rise and Fall of American Slavery, Robert Fogel maintains that slavery was in fact a profitable method of production, especially on bigger plantations growing cotton that fetched high prices in the world market. It gave whites in the South higher average incomes than those in the North, but most of the money was spent on buying slaves and plantations.
Slavery is more common when the labour done is relatively simple and thus easy to supervise, such as large-scale growing of a single crop. It is much more difficult and costly to check that slaves are doing their best and with good quality when they are doing complex tasks. Therefore, slavery was seen as the most efficient method of production for large-scale crops like sugar and cotton, whose output was based on economies of scale. This enabled a gang system of labor to be prominent on large plantations where field hands were monitored and worked with factory-like precision. Each work gang was based on an internal division of labor that not only assigned every member of the gang to a precise task but simultaneously made his or her performance dependent on the actions of the others. The hoe hands chopped out the weeds that surrounded the cotton plants as well as excessive sprouts. The plow gangs followed behind, stirring the soil near the rows of cotton plants and tossing it back around the plants. Thus, the gang system worked like an early version of the assembly line later to be found in factories.
Critics since the 18th century have argued that slavery tends to retard technological advancement, since the focus is on increasing the number of slaves doing simple tasks rather than upgrading the efficiency of labour. Because of this, theoretical knowledge and learning in Greece—and later in Rome—was not applied to ease physical labour or improve manufacturing.
Adam Smith made the argument that free labor was economically better than slave labor, and argued further that slavery in Europe ended during the Middle Ages, and then only after both the church and state were separate, independent and strong institutions, that it is nearly impossible to end slavery in a free, democratic and republican forms of governments since many of its legislators or political figures were slave owners, and would not punish themselves, and that slaves would be better able to gain their freedom when there was centralized government, or a central authority like a king or the church. Similar arguments appear later in the works of Auguste Comte, especially when it comes to Adam Smith's belief in the separation of powers or what Comte called the "separation of the spiritual and the temporal" during the Middle Ages and the end of slavery, and Smith's criticism of masters, past and present. As Smith stated in the Lectures on Jurisprudence, "The great power of the clergy thus concurring with that of the king set the slaves at liberty. But it was absolutely necessary both that the authority of the king and of the clergy should be great. Where ever any one of these was wanting, slavery still continues. "
Slaves can be an attractive investment because the slave-owner only needs to pay for sustenance and enforcement. This is sometimes lower than the wage-cost of free labourers, because free workers earn more than sustenance, in these cases slaves have positive price. When the cost of sustenance and enforcement exceeds the wage rate, slave-owning would no longer be profitable, and owners would simply release their slaves. Slaves are thus a more attractive investment in high-wage environments, and environments where enforcement is cheap, and less attractive in environments where the wage-rate is low and enforcement is expensive.
Free workers also earn compensating differentials, whereby they are paid more for doing unpleasant work. Neither sustenance nor enforcement costs rise with the unpleasantness of the work, however, so slaves' costs do not rise by the same amount. As such, slaves are more attractive for unpleasant work, and less for pleasant work. Because the unpleasantness of the work is not internalised, being born by the slave rather than the owner, it is a negative externality and leads to over-use of slaves in these situations.
The weighted average global sales price of a slave is calculated to be approximately $340, with a high of $1,895 for the average trafficked sex slave, and a low of $40 to $50 for debt bondage slaves in part of Asia and Africa. Worldwide slavery is a criminal offense but slave owners can get very high returns for their risk. According to researcher Siddharth Kara, the profits generated worldwide by all forms of slavery in 2007 were $91.2 billion. That is second only to drug trafficking in terms of global criminal enterprises. The weighted average annual profits generated by a slave in 2007 was $3,175, with a low of an average $950 for bonded labor and $29,210 for a trafficked sex slave. Approximately 40% of slave profits each year are generated by trafficked sex slaves, representing slightly more than 4% of the world's 29 million slaves.
Robert E. Wright has developed a model that helps to predict when firms (individuals, companies) will be more likely to use slaves rather than wage workers, indentured servants, family members, or other types of laborers.
On May 21, 2001, the National Assembly of France passed the Taubira law, recognizing slavery as a crime against humanity. Apologies on behalf of African nations, for their role in trading their countrymen into slavery, remain an open issue since slavery was practiced in Africa even before the first Europeans arrived and the Atlantic slave trade was performed with a high degree of involvement of several African societies. The black slave market was supplied by well-established slave trade networks controlled by local African societies and individuals. Indeed, as already mentioned in this article, slavery persists in several areas of West Africa until the present day.
There is adequate evidence citing case after case of African control of segments of the trade. Several African nations such as the Calabar and other southern parts of Nigeria had economies depended solely on the trade. African peoples such as the Imbangala of Angola and the Nyamwezi of Tanzania would serve as middlemen or roving bands warring with other African nations to capture Africans for Europeans.
Several historians have made important contributions to the global understanding of the African side of the Atlantic slave trade. By arguing that African merchants determined the assemblage of trade goods accepted in exchange for slaves, many historians argue for African agency and ultimately a shared responsibility for the slave trade.
In 1999, President Mathieu Kerekou of Benin (formerly the Kingdom of Dahomey) issued a national apology for the central role Africans played in the Atlantic slave trade. Luc Gnacadja, minister of environment and housing for Benin, later said: "The slave trade is a shame, and we do repent for it." Researchers estimate that 3 million slaves were exported out of the Slave Coast bordering the Bight of Benin. President Jerry Rawlings of Ghana also apologized for his country's involvement in the slave trade.
The issue of an apology is linked to reparations for slavery and is still being pursued by a number of entities across the world. For example, the Jamaican Reparations Movement approved its declaration and action Plan.
In September 2006, it was reported that the UK government might issue a "statement of regret" over slavery. This was followed by a "public statement of sorrow" from Tony Blair on November 27, 2006, and a formal apology on March 14, 2007.
On February 25, 2007, the Commonwealth of Virginia resolved to 'profoundly regret' and apologize for its role in the institution of slavery. Unique and the first of its kind in the U. S., the apology was unanimously passed in both Houses as Virginia approached the 400th anniversary of the founding of Jamestown, where the first slaves were imported into North America in 1619.
Liverpool, which was a large slave trading port, apologized in 1999. On August 24, 2007, Mayor Ken Livingstone of London, United Kingdom, apologized publicly for Britain's role in colonial slave trade. "You can look across there to see the institutions that still have the benefit of the wealth they created from slavery," he said, pointing towards the financial district. He claimed that London was still tainted by the horrors of slavery. Specifically, London outfitted, financed, and insured many of the ships, which helped fund the building of London's docks. Jesse Jackson praised Livingstone, and added that reparations should be made, one of his common arguments.
On July 30, 2008, the United States House of Representatives passed a resolution apologizing for American slavery and subsequent discriminatory laws. In June 2009, the US Senate passed a resolution apologizing to African-Americans for the "fundamental injustice, cruelty, brutality, and inhumanity of slavery". The news was welcomed by President Barack Obama, the nation's first President of African descent. Some of President Obama's ancestors were slave owners.
In 2010, Libyan leader Muammar Gaddafi apologized for Arab involvement in the slave trade, saying: "I regret the behavior of the Arabs… They brought African children to North Africa, they made them slaves, they sold them like animals, and they took them as slaves and traded them in a shameful way."
There have been movements to achieve reparations for those formerly held as slaves, or sometimes their descendants. Claims for reparations for being held in slavery are handled as a civil law matter in almost every country. This is often decried as a serious problem, since former slaves' relative lack of money means they often have limited access to a potentially expensive and futile legal process. Mandatory systems of fines and reparations paid to an as yet undetermined group of claimants from fines, paid by unspecified parties, and collected by authorities have been proposed by advocates to alleviate this "civil court problem. " Since in almost all cases there are no living ex-slaves or living ex-slave owners these movements have gained little traction. In nearly all cases the judicial system has ruled that the statute of limitations on these possible claims has long since expired.
Other uses of the term
The word slavery is often used as a pejorative to describe any activity in which one is coerced into performing.
- Many argue that military drafts and other forms of coerced government labour constitute state-operated slavery.
- Some socialists, view total and immediate wage dependence as a form of slavery.
- Some libertarians and anarcho-capitalists view government taxation as a form of slavery.
- Some proponents of animal rights apply the term slavery to the condition of some or all human-owned animals, arguing that their status is comparable to that of human slaves.
Film has been the most influential medium in the presentation of the history of slavery to the general public around the world. The American film industry has had a complex relationship with slavery and until recent decades often avoided the topic. Films such as Birth of a Nation (1915) and Gone with the Wind (1939) became controversial because they gave a favorable depiction. The last favorable treatment was Song of the South from Disney in 1946. In 1940 The Santa Fe Trail gave a liberal but ambiguous interpretation of John Brown's attacks on slavery—the film does not know what to do with slavery. The Civil Rights Movement in the 1950s made defiant slaves into heroes. The question of slavery in American memory necessarily involves its depictions in feature films.
Most Hollywood films used American settings, although Spartacus (1960), dealt with an actual revolt in the Roman Empire known as the Third Servile War. It failed and all the rebels were executed, but their spirit lived on according to the film. The Last Supper (La última cena in Spanish) was a 1976 film directed by Cuban Tomás Gutiérrez Alea about the teaching of Christianity to slaves in Cuba, and emphasizes the role of ritual and revolt. Burn! takes place on the imaginary Portuguese island of Queimada (where the locals speak Spanish) and it merges historical events that took place in Brazil, Cuba, Santo Domingo, Jamaica, and elsewhere. Spartacus stays surprisingly close to the historical record.
Historians agree that films have largely shaped historical memories, but they debate issues of accuracy, plausibility, moralism, sensationalism, how facts are stretched in search of broader truths, and suitability for the classroom. Berlin argues that critics complain if the treatment emphasizes historical brutality, or if it glosses over the harshness to highlight the emotional impact of slavery.
- 1926 Slavery Convention
- Abolition of slavery timeline
- Human trafficking
- Indentured servant
- Involuntary servitude
- List of slave owners
- United Nations 1956 Supplementary Convention on the Abolition of Slavery
Surveys and reference
- Bales, Kevin, Disposable People: New Slavery in the Global Economy (1999)
- Campbell, Gwyn, Suzanne Miers, and Joseph C. Miller, eds. Women and Slavery. Volume 1: Africa, the Indian Ocean World, and the Medieval Atlantic; Women and Slavery. Volume 2: The Modern Atlantic (2007)
- Davis, David Brion. The Problem of Slavery in the Age of Revolution, 1770-1823 (1999)
- Davis, David Brion. The Problem of Slavery in Western Culture (1988)
- Drescher, Seymour. Abolition: A History of Slavery and Antislavery (2009) highly regarded history of slavery and its abolition, worldwide
- Finkelman, Paul, ed. Encyclopedia of Slavery (1999)
- ISBN 81-85689-67-9
- Gordon, M. Slavery in the Arab World (1989)
- Greene, Jacqueline. Slavery in Ancient Egypt and Mesopotamia, (2001), ISBN 0-531-16538-8
- Miers, Suzanne, and Igor Kopytoff, eds. Slavery In Africa: Historical & Anthropological Perspectives (1979)
- Morgan, Kenneth. Slavery and the British Empire: From Africa to America (2008)
- Joseph, Celucien L. Race, Religion, and The Haitian Revolution: Essays on Faith, Freedom, and Decolonization (CreateSpace Independent Publishing Platform, 2012)
- Joseph, Celucien L. From Toussaint to Price-Mars: Rhetoric, Race, and Religion in Haitian Thought (CreateSpace Independent Publishing Platform, 2013)
- Postma, Johannes. The Atlantic Slave Trade, (2003)
- Rodriguez, Junius P., ed., The Historical Encyclopedia of World Slavery (1997)
- Rodriguez, Junius P., ed. Slavery in the United States: A Social, Political, and Historical Encyclopedia (2007)
- Shell, Robert Carl-Heinz Children Of Bondage: A Social History Of The Slave Society At The Cape Of Good Hope, 1652–1813 (1994)
- William Linn Westermann, The Slave Systems of Greek and Roman Antiquity (1955), ISBN 0-87169-040-3
- Uncited sources
- Hogendorn, Jan and Johnson Marion: The Shell Money of the Slave Trade. African Studies Series 49, Cambridge University Press, Cambridge, 1986.
- The Slavery Reader, ed. by Rigas Doganis, Gad Heuman, James Walvin, Routledge 2003
- United States
- Berlin, Ira. Many Thousands Gone: The First Two Centuries of Slavery in North America (1999), most important recent survey
- Blackmon, Douglas A. Slavery by Another Name: The Re-Enslavement of Black Americans from the Civil War to World War II Doubleday (March 23, 2008), ISBN 0-385-50625-2 ISBN 978-0-385-50625-0
- Boles, John. Black Southerners: 1619–1869 (1983) brief survey
- Genovese Eugene D. Roll, Jordan Roll (1974), classic study
- Richard H. King, "Marxism and the Slave South", American Quarterly 29 (1977), 117–31, a critique of Genovese
- , Vol. 67, 2001
- Phillips, Ulrich B. American Negro Slavery: A Survey of the Supply, Employment and Control of Negro Labor as Determined by the Plantation Regime (1918; paperback reprint 1966), southern white perspective
- Phillips, Ulrich B. Life and Labor in the Old South (1929)
- Sellers, James B. Slavery in Alabama (1950).
- Sydnor, Charles S. Slavery in Mississippi (1933
- Stampp, Kenneth M. The Peculiar Institution: Slavery in the Ante-Bellum South (1956), a rebuttal of U B Philipps
- Weinstein, Allen, Frank O. Gatell, and Lewis Sarasohn, eds., American Negro Slavery: A Modern Reader, third ed. (1978)
- Mintz, S. Slavery Facts & Myths, Digital History
- Slavery in the modern era
- Jesse Sage and Liora Kasten, Enslaved: True Stories of Modern Day Slavery, Palgrave Macmillan, 2008 ISBN 978-1-4039-7493-8
- Tom Brass, Marcel van der Linden, and Jan Lucassen, Free and Unfree Labour. Amsterdam: International Institute for Social History, 1993
- Tom Brass, Towards a Comparative Political Economy of Unfree Labour: Case Studies and Debates, London and Portland, OR: Frank Cass Publishers, 1999. 400 pages.
- Tom Brass and Marcel van der Linden, eds., Free and Unfree Labour: The Debate Continues, Bern: Peter Lang AG, 1997. 600 pages. A volume containing contributions by all the most important writers on modern forms of unfree labour.
- Kevin Bales, Disposable People. New Slavery in the Global Economy, Revised Edition, University of California Press 2004, ISBN 0-520-24384-6
- Kevin Bales (ed.), Understanding Global Slavery Today. A Reader, University of California Press 2005, ISBN 0-520-24507-5freak
- Kevin Bales, Ending Slavery: How We Free Today's Slaves, University of California Press 2007, ISBN 978-0-520-25470-1.
- Mende Nazer and Damien Lewis, Slave: My True Story, ISBN 1-58648-212-2. Mende is a Nuba, captured at 12 years old. She was granted political asylum by the British government in 2003.
- Gary Craig, Aline Gaus, Mick Wilkinson, Klara Skrivankova and Aidan McQ e (2007). ISBN 978-1-85935-573-2.
- David Hawk, ISBN 0-615-62367-0
- Somaly Mam Foundation
- Thomas Sowell, The Real History of Slavery, in: Black Rednecks and White Liberals, San Francisco: Encounter Books, 2005. ISBN 978-1-59403-086-4.
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- Slavery Resource Guide, from the Library of Congress
- Digital Library on American Slavery
- African Holocaust
- Emory and Oxford College
- Slavery Fact Sheets, Digital History
- The West African Sqron and slave trade
- Slavery – PBS
- Understanding Slavery
- Slavery Museum. Great Britain.
- Archives on slavery held by the University of London
- Mémoire St Barth (archives & history of slavery, slave trade and their abolition), Comité de Liaison et d'Application des Sources Historiques.
- Archives of the Middelburgsche Commercie Compagnie (MCC) 'Trade Company of Middelburg' (Inventory of the archives of the Dutch slave trade across the Atlantic)
- The First Post
- Slavery – PBS
- Walk Free Foundation – Global Slavery Index 2013 | Explore the Index
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