It might be C I am not 100% sure but enough to think It might be right.
In 1865 President Andrew Johnson implemented a plan of Reconstruction that gave the white South a free hand in regulating the transition from slavery to freedom and offered no role to blacks in the politics of the South. ... The end of the Civil War found the nation without a settled Reconstruction policy.
The Columbian Exchange or Grand Exchange, was the widespread, at the time, communicable diseases were a byproduct of the exchange.Slaves were a popular trade it em between Africa, Europe, and the American.
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Islam came to root along the East African coast some time in the 8th century, as part of a continuing dialogue between the people on the East coast and traders from the Persian Gulf and Oman. Like early Christianity, Islam was monotheistic, that is, Muslims worship only one god.
Explanation:
