The answer would be A
Hope this helps (:
Because they knew that Germans could sink any ship they want. They could sink civilian ships. Back then, the only way to travel long distances was by boat, because passenger airplanes had not been invented. The Germans could now sink them if they wanted to travel somewhere, so they either risk their life or not go on trips.
Relations between<span> the </span>Soviet Union<span> and the </span>United States<span> were driven by a ... which led to shifts</span>between<span> cautious cooperation and often </span>bitter<span> superpower </span>rivalry<span> over ... Although </span>World War II<span> brought the two countries into alliance</span>
Slaves were contributing to the Southern war effort by providing food, supplies, and manual labor.
