Answer:
a) the study of the political, social, cultural, and economic setting surrounding a historical event
Explanation:
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.
Constitution
people
citizens
press
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