The Catholic church was the only church in europe during the middle age, it had its own laws.
Germany- The U.S. might be less willing to support Germany in a time of war after WW1, but would help them immensly during a time of peace.
Japan- The U.S. might be less willing to support Japan during a time of war, but would help Japan during a time of peace.
Mexico- The U.S. might not help Mexico during a time of war (because of Trump), but would probaly help Mexico during peace.
Hope This Helps!
I think it's The Declaration of Independence was written