Answer:
I think consistent attempts to bring about detente is correct. hopefully this is right.
The end of the 19 century, American Imperialism kept growing up, they wanted more land, more resources, but they couldn't deal with the Great Powers in Europe, so they invasion Spain.
A.) No, Mexico did not attack the United States
B.) No, the war only caused more debt they would not of wanted to join over money.
C.) Yes, they retrieved a letter and it revealed that the country sending the letter was trying to find ways to make us join. In the early 1900s we were attempting to return to our safe isolationist country-- but world war 1 didnt allow for this to stay.
Answer: I think all except the last one