The Slave - which is the root of Slave - should sue the Greeks. The were enslaved by the Greeks...
By the Greeks, the Scythians, the Romans, the Huns, the Arabs, the Vikings, the Mongols... For over a 1000 years the Slav dominated the market as the slave of choice!
Compared to the Slav Sub-Saharan Africans are Johnny-Come-Lately to that market!