Which answer choice names two way African American men help in the civil war?
(A) African American men played no role in the war
(B) They joined the Native American uprising to try to take back land from the setters
(C) They served in the Union army and they worked as carpenters, cooks, and guards
(D) They worked as nurses on the battlefield and they built most of the ironclad ships the Union used in the war.