Most African American politicians: A. disagreed about civil rights B. supported the Democratic part C. came from Northern cities D. were members of the Republican party

Most African American politicians were members of the Republican party Thus Option D is the right answer.

Explanation:

Civil war resulted in union states to attain victory and triumphant over the southern states which are called confederate states.

Abraham Lincoln rendered Emancipation proclamation which had a deep impact on the psyche of the southerners who were protesting for enfranchisement rights.

Lincoln belonged to Republican Party and southerners had a strong faith and belief towards Lincoln' proclamation. Martin Luther King Jr who also belonged to the anti-slavery Republican Party fought for the annihilation of racialism and envisioned an integrated political system in America.