The U.S. government openly stated that they would view any European interference in Latin America as "an act of aggression". This was articulated clearly in the Monroe Doctrine, which stated that the US would respond with military force.
I believe if not then im wrong but there goal was to make fire hand made
Because Hoover wanted to end the Great Depression but I'm not entirely sure
The United States of America won/drew the revolutionary war with the help of France Spain Dutch republic and the British (yes the British also helped the US)
Slaves thay dident whant to give them that power