Answer:
The final Allied victory over the Axis in Italy did not come until the spring offensive of 1945, after Allied troops had breached the Gothic Line, leading to the surrender of German and RSI forces in Italy on 2 May shortly before Germany finally surrendered ending World War II in Europe on 8 May.
Explanation:
Unrestricted Submarine Warfare.
Germany attacked whatever because of this tactic, also taking out vessels carrying US citizens, which is unacceptable to the US.
Declaring war is one, because that is congress job
The executive branch carries out laws
