I would say the answer is B. A is wrong because slavery was just being called for abolition. D is wrong because no women had the right to vote till 1890s.
C creation of a peace organisation
A. Civil rights act of 1964
One of the main ways in which the United States attempted to strengthen its ties and influence with the nations of Latin America was by declaring that further attempts to colonize this area by Europeans would be met with resistance by the US--as embodied in the Monroe Doctrine.
