Answer:
Sinking of American merchant ships
Its declared decision on 31 January 1917 to target neutral shipping in a designated war-zone became the immediate cause of the entry of the United States into the war.
Explanation:
make me brainliest
Answer: I think the answer is B
Explanation:
Napoleon lost power due to his failed major military campaigns. He tried to split his army to fight in two different fronts. He also retreated back to Paris after a crushing defeat.