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.
American citizens were denied due process of law. ... It declared the internment of Japanese Americans to be legal as a matter of military necessity.
Answer:1800–1842. 1821: Spain cedes Florida to United States (Adams–Onís Treaty).
The answer is A hope that helps