The answer would be Monroe Doctrine. That was the US policy that said foreign nations would not be allowed to continue with imperialism or colonizing undeveloped nations. Not that they could really enforce that.
That the people should govern themselves but there should be a set number of laws. And someone to enforce these laws. And they should be very protective as to not let things slide. They didn't want to have a king they wanted a democracy where they would hold elections and the people got to choose there leader.
D tigris rivers if I'm wrong but I don't know
