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The German use of _______ caused tension to increase between the United States and Germany.

A.
atomic bombs
B.
isolationism
C.
submarine warfare
D.
rationing

2 Answers

4 votes
c. submarine warfare
User AvatarKava
by
4.0k points
4 votes

Answer: C. submarine warfare

Explanation:

User Alex Djioev
by
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