"Reconstruction" was needed to help the nation come together again. This was meant to be a reconciliatory measure that would reintegrate the South, but largely was a failure due to a lack of government oversight.
The Roosevelt Corollary B) sanctioned U.S. intervention in Latin American affairs.
Explanation:
The Roosevelt Corollary was one of the additions made to the Monroe doctrine which made guidelines of foreign relations handled by the USA and this was an overturn in their policy of isolation in a major way.
Theodore Roosevelt had made sure that the US intervention in Latin American states which was outlawed previously was passed and thus the sanction to intervene was gotten in the middle of Venezuela Crisis' fallout in 1904.