Why did congress feel that reconstruction was a congressional task and not a presidential task

Idon't really understand the question. it counts for 20% of my lesson grade and i really need putting the answer into words. anything will . i need asap so im awarding 30 points.a disagreement between states of the united states concerning the rights of states vs. the authority of the national government led to the civil war. state governments were forced by war into a subservient position. what might happen if national governments ceded their authority to a world government by international treaty?

American troops were worried about cantracting in cuba a. yellow fever b. hepatitis c. polio

Secretary of state kissinger engaged in to reach a cease-fire between israel and arab nations.