I think it happened because president Hayes had a bad reputation at that time and the idea was, the congress should be stronger to "look at his hands".
Answer:
Belgium
Explanation:
Britain joined WWI on 4 August 1914 in response to the German invasion of Belgium.
First question: D- people who were living in America at the time, didn't want other people to come in and "steal their jobs". To me, nativism (at the time) was a pretty stupid thing, considering how many of the people who didn't want anyone else coming into the country, were immigrants themselves.
Second question: D is the closest answer, seeing as Roosevelt wanted to improve relations with Central and South America.
Hope this helps!
I believe A might be right