Based on what I've researched the Freedman's Bureau helped African Americans A) Establish schools and settle disputes after the War since they were newly freed people. It was soon shut down due to no funds or personnel. So the answer is A.
The relationship between the United States and Latin America was limited in the late 1800's, although there was some contact because of wars where the U.S stepped in, like the short Spanish–American War of 1898.
His political theory of government by the consent of the governed as a means to protect the three natural rights of “life, liberty and estate” deeply influenced the United States' founding documents.
A factor which didn't lead to decolonization movements in Africa would be Greed - b. Greed was actually the reason why there was colonialization in the first place in Africa. The people at the time saw this as an excelllent opportunity to make a lot of money.