The correct answer is Britain.
Answer: The reason America became involved in WWI was because Germany started sinking American merchant ships around the British isles
Explanation: Originally, America wanted nothing to to with the war because they weren't concerned about about events and alliances in Europe, and thus stayed out of the war. But eventually German forced our hand and we joined.
The British recognized american independence and handed over majority of its territory east of the Mississippi River which doubled the size of what new America was becoming
Answer:
They did not believe that someone could do something so horrible.
