History of slavery
The history of slavery spans many different cultures, nationalities, and religions from ancient times to the present day. Likewise, its victims have come from many different ethnicities and religious groups. The social, economic, and legal positions of slaves have differed vastly in different systems of slavery in different times and places.
Slavery has been found in some hunter-gatherer populations, particularly as hereditary slavery, but the conditions of agriculture with increasing social and economic complexity offer greater opportunity for mass chattel slavery. Slavery was institutionalized by the time the first civilizations emerged. Slavery features in the Mesopotamian Code of Hammurabi, which refers to it as an established institution.
Slavery was widespread in the ancient world in Europe, Asia, the Middle East, Africa, and the Americas.
Slavery became less common throughout Europe during the Early Middle Ages but continued to be practiced in some areas. Both Christians and Muslims captured and enslaved each other during centuries of warfare in the Mediterranean and Europe. Islamic slavery encompassed mainly Western and Central Asia, Northern and Eastern Africa, India, and Europe from the 7th to the 20th century. Islamic law approved of enslavement of non-Muslims, and slaves were trafficked from non-Muslim lands: from the North via the Balkan slave trade and the Crimean slave trade; from the East via the Bukhara slave trade; from the West via Andalusian slave trade; and from the South via the Trans-Saharan slave trade, the Red Sea slave trade and the Indian Ocean slave trade.
Beginning in the 16th century, European merchants, starting mainly with merchants from Portugal, initiated the transatlantic slave trade. Few traders ventured far inland, attempting to avoid tropical diseases and violence. They mostly purchased imprisoned Africans from West African kingdoms, transporting them to Europe's colonies in the Americas. The merchants were sources of desired goods including guns, gunpowder, copper manillas, and cloth, and this demand for imported goods drove local wars and other means to the enslavement of Africans in ever greater numbers. In India and throughout the New World, people were forced into slavery to create the local workforce. The transatlantic slave trade was eventually curtailed after European and American governments passed legislation abolishing their nations' involvement in it. Practical efforts to enforce the abolition of slavery included the British Preventative Squadron and the American African Slave Trade Patrol, the abolition of slavery in the Americas, and the widespread imposition of European political control in Africa.
In modern times, human trafficking remains an international problem. Slavery in the 21st century continues and generates an estimated $150 billion in annual profits. Populations in regions with armed conflict are especially vulnerable, and modern transportation has made human trafficking easier. In 2019, there were an estimated 40.3 million people worldwide subject to some form of slavery, and 25% were children. 24.9 million are used for forced labor, mostly in the private sector; 15.4 million live in forced marriages. Forms of slavery include domestic labour, forced labour in manufacturing, fishing, mining and construction, and sexual slavery.
Prehistoric and ancient slavery
Evidence of slavery predates written records; the practice has existed in many cultures and can be traced back 11,000 years ago due to the conditions created by the invention of agriculture during the Neolithic Revolution. Economic surpluses and high population densities were conditions that made mass slavery viable.Slavery occurred in civilizations including ancient Egypt, ancient China, the Akkadian Empire, Assyria, Babylonia, Persia, ancient Israel, ancient Greece, ancient India, the Roman Empire, the Arab Islamic Caliphates and Sultanates, Nubia, Aksum the pre-colonial empires of Sub-Saharan Africa, and the pre-Columbian civilizations of the Americas. Ancient slavery consists of a mixture of debt-slavery, punishment for crime, prisoners of war, child abandonment, and children born to slaves.
Africa
Sub-Saharan Africa
was once East Africa's main slave-trading port, during the Indian Ocean slave trade and under Omani Arabs in the 19th century, with as many as 50,000 slaves passing through the city each year.Prior to the 16th century, the bulk of slaves exported from Africa were shipped from East Africa to the Arabian peninsula. Zanzibar became a leading port in this trade. Arab traders of slaves differed from European ones in that they would often conduct raiding expeditions themselves, sometimes penetrating deep into the continent. They also differed in that their market greatly preferred the purchase of enslaved females over males.
The increased presence of European rivals along the East coast led Arab traders to concentrate on the overland slave caravan routes across the Sahara from the Sahel to North Africa. The German explorer Gustav Nachtigal reported seeing slave caravans departing from Kukawa in Bornu bound for Tripoli and Egypt in 1870. The trade of slaves represented the major source of revenue for the state of Bornu as late as 1898. The eastern regions of the Central African Republic have never recovered demographically from the impact of 19th-century raids from the Sudan and still have a population density of less than 1 person/km2. During the 1870s, European initiatives against the trade of slaves caused an economic crisis in northern Sudan, precipitating the rise of Mahdist forces. Mahdi's victory created an Islamic state, one that quickly reinstituted slavery.
The Middle Passage, the crossing of the Atlantic to the Americas, endured by slaves laid out in rows in the holds of ships, was only one element of the well-known triangular trade engaged in by Portuguese, American, Dutch, Danish-Norwegians, French, British and others. Ships having landed with slaves in Caribbean ports would take on sugar, indigo, raw cotton, and later coffee, and make for Liverpool, Nantes, Lisbon or Amsterdam. Ships leaving European ports for West Africa would carry printed cotton textiles, some originally from India, copper utensils and bangles, pewter plates and pots, iron bars more valued than gold, hats, trinkets, gunpowder and firearms and alcohol. Tropical shipworms were eliminated in the cold Atlantic waters, and at each unloading, a profit was made.
The Atlantic slave trade peaked in the late 18th century when the largest number of people were captured and enslaved on raiding expeditions into the interior of West Africa. These expeditions were typically carried out by African states, such as the Bono State, Oyo empire, Kong Empire, Kingdom of Benin, Imamate of Futa Jallon, Imamate of Futa Toro, Kingdom of Koya, Kingdom of Khasso, Kingdom of Kaabu, Fante Confederacy, Ashanti Confederacy, Aro Confederacy and the kingdom of Dahomey. Europeans rarely entered the interior of Africa, due to fear of disease and moreover fierce African resistance. The slaves were brought to coastal outposts where they were traded for goods. The people captured on these expeditions were shipped by European traders to the colonies of the New World. It is estimated that over the centuries, twelve to twenty million slaves were shipped from Africa by European traders, of whom some 15 percent died during the terrible voyage, many during the arduous journey through the Middle Passage. The great majority were shipped to the Americas, but some also went to Europe and Southern Africa.
While talking about the trade of slaves in East Africa in his journals, David Livingstone said
While travelling in the African Great Lakes Region in 1866, Livingstone described a trail of slaves:
19th June 1866 – We passed a woman tied by the neck to a tree and dead, the people of the country explained that she had been unable to keep up with the other slaves in a gang, and her master had determined that she should not become anyone's property if she recovered.
26th June. –...We passed a slave woman shot or stabbed through the body and lying on the path: a group of men stood about a hundred yards off on one side, and another of the women on the other side, looking on; they said an Arab who passed early that morning had done it in anger at losing the price he had given for her, because she was unable to walk any longer.
27th June 1866 – To-day we came upon a man dead from starvation, as he was very thin. One of our men wandered and found many slaves with slave-sticks on, abandoned by their masters from want of food; they were too weak to be able to speak or say where they had come from; some were quite young.
African participation in the slave trade
African states played a key role in the trade of slaves, and slavery was a common practice among Sub Saharan Africans even before the involvement of the Arabs, Berbers and Europeans. There were three types: those who were enslaved through conquest, instead of unpaid debts, or those whose parents gave them as property to tribal chiefs. Chieftains would barter their slaves to Arab, Berber, Ottoman or European buyers for rum, spices, cloth or other goods. Selling captives or prisoners was a common practice among Africans, Turks, Berbers and Arabs during that era. However, as the Atlantic trade of slaves increased its demand, local systems which primarily serviced indentured servitude expanded. European trading of slaves, as a result, was the most pivotal change in the social, economic, cultural, spiritual, religious, political dynamics of the concept of trading in slaves. It ultimately undermined local economies and political stability as villages' vital labour forces were shipped overseas as slave raids and civil wars became commonplace. Crimes which were previously punishable by some other means became punishable by enslavement.Slavery already existed in Kingdom of Kongo prior to the arrival of the Portuguese. Because it had been established within his kingdom, Afonso I of Kongo believed that the slave trade should be subject to Kongo law. When he suspected the Portuguese of receiving illegally slaves to sell, he wrote letters to the King João III of Portugal in 1526 imploring him to put a stop to the practice.
The kings of Dahomey sold their war captives into transatlantic slavery, who otherwise may have been killed in a ceremony known as the Annual Customs. As one of West Africa's principal slave states, Dahomey became extremely unpopular with neighbouring peoples. Like the Bambara Empire to the east, the Khasso kingdoms depended heavily on the slave trade for their economy. A family's status was indicated by the number of slaves it owned, leading to wars for the sole purpose of taking more captives. This trade led the Khasso into increasing contact with the European settlements of Africa's west coast, particularly the French. Benin grew increasingly rich during the 16th and 17th centuries on the trade of slaves with Europe; slaves from enemy states of the interior were sold, and carried to the Americas in Dutch and Portuguese ships. The Bight of Benin's shore soon came to be known as the "Slave Coast".
In the 1840s, King Gezo of Dahomey said:
"The slave trade is the ruling principle of my people. It is the source and the glory of their wealth...the mother lulls the child to sleep with notes of triumph over an enemy reduced to slavery."
In 1807 the United Kingdom made the international trade of slaves illegal with the Slave Trade Act. The Royal Navy was deployed to prevent slavers from the United States, France, Spain, Portugal, Holland, West Africa and Arabia. The King of Bonny allegedly became dissatisfied of the British intervention in stopping the trade of slaves:
"We think this trade must go on. That is the verdict of our oracle and the priests. They say that your country, however great, can never stop a trade ordained by God himself."
Joseph Miller states that African buyers would prefer males, but in reality, women and children would be more easily captured as men fled. Those captured would be sold for various reasons such as food, debts, or servitude. Once captured, the journey to the coast killed many and weakened others. Disease engulfed many, and insufficient food damaged those who made it to the coasts. Scurvy was common, and was often referred to as mal de Luanda. The assumption for those who died on the journey died from malnutrition. As food was limited, water may have been just as bad. Dysentery was widespread and poor sanitary conditions at ports did not help. Since supplies were poor, slaves were not equipped with the best clothing, meaning they were even more exposed to diseases.
On top of the fear of disease, people were afraid of why they were being captured. The popular assumption was that Europeans were cannibals. Stories and rumours spread that whites captured Africans to eat them. Olaudah Equiano accounts his experience about the sorrow slaves encountered at the ports. He talks about his first moment on a slave ship and asked if he was going to be eaten. Yet, the worst for slaves has only begun, and the journey on the water proved to be more harrowing. For every 100 Africans captured, only 64 would reach the coast, and only about 50 would reach the New World.
Others believe that slavers had a vested interest in capturing rather than killing, and in keeping their captives alive; and that this coupled with the disproportionate removal of males and the introduction of new crops from the Americas would have limited general population decline to particular regions of western Africa around 1760–1810, and in Mozambique and neighbouring areas half a century later. There has also been speculation that within Africa, females were most often captured as brides, with their male protectors being a "bycatch" who would have been killed if there had not been an export market for them.
British explorer Mungo Park encountered a group of slaves when traveling through Mandinka country:
During the period from the late 19th century and early 20th century, demand for the labour-intensive harvesting of rubber drove frontier expansion and forced labour. The personal monarchy of Belgian King Leopold II in the Congo Free State saw mass killings and slavery to extract rubber.