Increasing the amount of well nourished workers for the factories during the industrial revolution
I'm not sure but here are some things europeans take from Africa and I hope this counts
Africans were either captured in warning raids or kidnapped and taken to the port by African slave traders. There they were exchanged for iron, guns, gunpowder, mirrors, knives, cloth, and beads brought by boat from Europe. When Europeans arrived along the West African coast, slavery already existed on the continent.
They are:
Latin (French, Italian, etc.)
Germanic (German, English, etc)
Slavic (Russian, Czech, etc.)
Others (Celtic, Basque, Finno)
Two thirds of votes of both houses of Congress or two third votes of the state legislatures
