Respuesta :
Answer:
B is correct. Germany had threatened the US and its ships,
Explanation:
A is def wrong. US was booming in trade with europe.
B is true. Germany attacked 2 us ships with U-boats.
C is true, but not main reason.
D is also def wrong cuz us are in homelands and attacking europ ain't gonna tighten relasionsips.
Answer:
Germany threatened the US and its ships.
Explanation:
Taking the exm currently and i studied previous edg lessons and it said "Germany directly threatened the US and its ships".