I believe your answer would be B. failed to pass congress because in 1872 they ruled it unconstitutional until after sumner died they passed it finally in 1875
July 28, 1868... I hope this helps :D
Slaves worked field and worked hard to get plants(like cotton) for their owners to sell. The more slaves there were, the more plants were picked, so the economy was better.
Answer:
it is c because it's effort to spread Republican is right