Seems everyone is Zulu. Zulu's were the most powerful tribe in Africa. It was the Zulu leaders that traded with the dutch and exchanged ther slaves for goods and those slaves were sent to the Americas.
No Zulu was ever a slave. Also today in Africa, no Zulu's will work for any other tribe - if you look at the mines, stores, etc, Zulu's do not work for anyone other then a Zulu in any organization.
Zulus were a subset of the Bantus, and they migrated into the area of South Africa about the time that the Europeans arrived in Capetown.
And the original Zulus were a small tribe until ShakaZulu conquered a lot of local tribes and integrated them into his empire.
Don’t know anything about Zulu slaves, but earlier peoples in the Zimbabwe area used to enslave Bushmen and use them for mining gold.
American blacks are only distantly related to the Zulus (their tribes went west, the Zulus went south a thousand years ago).