On the Fact that There Were Four African Slave Trades from 1400 to 1900 (Tran-Atlantic, Trans-Sahara, Red Sea, and Indian Ocean) but We Only Hear About the Trans-Atlantic Slave Trade Because that's the One Where the Leftists Can Extract the Most White Guilt, Sew the Most Division, and Grievance-Monger till the Cows Come Home

 And this doesn't even include the vast slave-trading that continuously took place within Africa. If you included that, God only knows what that final tally would resemble.