Answer:
ok umm will you refraze that please
Explanation:
Late.
The US joined the first world war in April, 1917. Why? Because President Wilson could no longer ignore the scale of the fighting. Germany started attacking every ship to approach Britain, which of course included US ships.
I can't think of any real significance. Perhaps knowing the US had joined the war frightened the Germans and their allies into running away?
The bill of rights was an addition to the US Constitution as a way to win the approval of many opponents. The opponents of the new system of the federation were concerned over the fact that the federal government would have high power and would kill individual rights. Because of that, they were opposed to the Constitution. With the Bill of Rights, they would win support because people’s rights were guaranteed.