Which of the following caused conflict among some members of the Republican party?

African Americans who were voting Democrat

use of poll taxes to determine eligibility to vote

raising taxes to pay for Reconstruction

extending the right to vote to African Americans

I believe the answer is D. extending the right to vote to african americans

Back then, even though the northern states want to free the them from slavery, the idea of giving the African American with voting rights was not really popular even among Republican party. Because of this, there was a division within the republican party each supporting contradicting policy