Hutterites, also called Hutterian Brethren, are a communal ethnoreligious branch of Anabaptists, who, like the Amish and Mennonites, trace their roots to the Radical Reformation of the early 16th century and have formed intentional communities.

Slavery in the Ottoman Empire was a major institution and a significant part of the Ottoman Empire's economy and traditional society. The main sources of slaves were wars and politically organized enslavement expeditions in the Caucasus, Eastern Europe, Southern Europe, Southeast Europe, and Africa. It has been reported that the selling price of slaves decreased after large military operations. In Constantinople, the administrative and political center of the Ottoman Empire, about a fifth of the 16th- and 17th-century population consisted of slaves. Statistics of these centuries suggest that Istanbul's additional slave imports from the Black Sea slave trade have totaled around 2.5 million from 1453 to 1700.