History of slavery

The history of slavery is the study of how societies have created, justified, organized, resisted, and abolished systems in which people were treated as property or near-property. Slavery has not been one timeless institution. Across different periods it has included chattel ownership, war captivity, debt bondage, hereditary servitude, household slavery, military slavery, sexual exploitation, penal labor, and other forms of coerced dependency.

The earliest secure documentary evidence usually cited for slavery comes from Early Dynastic Mesopotamia. A tablet from Shuruppak, also known archaeologically as Fara, and catalogued by the Louvre as AO 3765, records a transaction traditionally described as involving a male slave and a house around 2600 BCE.^[1] The tablet is important because it shows a person placed inside a recordable transfer, a key feature of alienability.

Earlier late-Uruk proto-cuneiform records from southern Mesopotamia may refer to enslaved or dependent people, but the interpretation is debated. Historians therefore often distinguish between plausible earlier signs of dependency and firmer evidence from contracts, legal records, censuses, and other documents that show sale, transfer, inherited status, or coercive control.

The scale of slavery is difficult to compare across world history because different records measure different things. A census counts a stock of people at one time. A ship database measures a flow across a route. A law records a formal rule, which may not match lived practice. A royal inscription may record captives in language shaped by propaganda.

The transatlantic slave trade is one of the best-documented forced migration systems because ship records can be aggregated. The SlaveVoyages database estimates roughly 12.5 million enslaved Africans embarked and roughly 10.7 million disembarked in the Americas.^[2] Other large systems, including ancient imperial deportations, Indian Ocean and trans-Saharan trades, Black Sea and Crimean raiding, and internal slave societies, are reconstructed from less even bodies of evidence.

Legal abolition occurred unevenly. Some jurisdictions abolished slave trading before abolishing legal slave status, and many replaced slavery with other coercive labor systems. Abolition therefore did not end all forms of forced labor, inherited stigma, racial hierarchy, domestic servitude, penal exploitation, or debt-based coercion. Modern antislavery law generally treats slavery, servitude, forced labor, human trafficking, forced marriage, and slavery-like practices as related but legally distinct categories.