<span>It used U-boats to sin ships carrying supplies to Britain</span>
The answer is
D. King Phillip II (the second)
Belgium's ports were close to the British coast and German control of Belgium would have been seen as a serious threat to Britain.
I think the answer would be A, imposing tariffs on Chinese products. Hope this helps.
It’s B, The exodus of African-Americans from the rural south to the Urban north