>slave traders
https://en.wikipedia.org/wiki/Crimean%E2%80%93Nogai_slave_raids_in_Eastern_Europe
For over three centuries, the military of the Crimean Khanate and the Nogai Horde conducted slave raids primarily in lands controlled by Russia and Poland-Lithuania as well as other territories, often under the sponsorship of the Ottoman Empire.
Their main purpose was the capture of slaves, most of whom were exported to the Ottoman slave markets in Constantinople or elsewhere in the Middle East. Genoese and Venetian merchants controlled the slave trade from Crimea to Western Europe. The raids were a drain of the human and economic resources of eastern Europe. They largely inhabited the "Wild Fields" – the steppe and forest-steppe land which extends from a hundred or so miles south of Moscow to the Black Sea and which now contains most of the Russian and Ukrainian population. The campaigns also played an important role in the development of the Cossacks.
Estimates of the number of people affected vary: Polish historian Bohdan Baranowski assumed that the 17th century Polish–Lithuanian Commonwealth (present-day Poland, Lithuania, Latvia, Estonia, Ukraine and Belarus) lost an average of 20,000 yearly and as many as one million in total from 1474 to 1694.[6] Mikhail Khodarkhovsky estimates that 150,000 to 200,000 people were abducted from Russia in the first half of the 17th century.
The first major raid occurred in 1468 and was directed into the south-eastern border of Poland. The last raid into Hungary took place in 1717. In 1769, the last major Tatar raid, which took place during the Russo-Turkish War, saw the capture of 20,000 slaves.