Why are there so many black people in the Soviet Union?

There were blacks in the Soviet Union, but not many. There are three sources of black people in Russia/Soviet Union:

1. Black slaves bought from the Ottoman Empire or black servant troops who left after occupying their land;

Second, African-American immigrants during the Great Depression;

Third, black party member was born in the * * * international period.

Pushkin's grandfather was black.

Black Cossack