> Slavery was already institutionalized by the time the first civilizations emerged (such as Sumer in Mesopotamia,[5] which dates back as far as 3500 BC). Slave

> Slavery was already institutionalized by the time the first civilizations emerged (such as Sumer in Mesopotamia,[5] which dates back as far as 3500 BC). Slavery features in the Mesopotamian Code of Hammurabi (c. 1750 BC), which refers to it as an established institution.[6] Slavery was widespread in the ancient world in Europe, Asia, Middle East, and Africa.[7][8][4] It became less common throughout Europe during the Early Middle Ages, although it 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.[9] Islamic slavery encompassed mainly Western and Central Asia, Northern and Eastern Africa, India, and Europe from the 7th to the 20th century. https://en.wikipedia.org/wiki/History_of_slavery https://en.wikipedia.org/wiki/History_of_slavery