Answer:
The trade of goods between the New World and Old World.
Explanation:
They moved nuclear capable weapons into cuba
They were afraid they would spy on the US.
I would not call this a history question unless you are looking for your employment to be history
They attacked enemy ships, passenger ships, and trade ships. Basically any ship they saw, they attacked it.
I believe it is A because after the reconstruction many groups such as the KKK developed and even though most slaves were freed, they weren't allowed very many rights
I took the AP US history test, I think this was one of the questions there.