The two main problems that Germany faced after World War I were that it had been stripped of its military and forced to pay harsh reparations. Hitler claimed that he would being back Germany's military and get people back to work--thus ending Germany's shame.
John Adams knew British law and he defended the British soldiers because he wanted to use evidence to prove whether they were innocent until proven guilty
The relationship between the United States and the USSR had always been strained because the political ideologies each supported, capitalism and democracy in the US and communism and a command economy in the USSR, were opposed to one another.
Hopefully this helps! Good luck!
In my opinion, it will enforce other nations to cooperate with our boundaries and accept differences.
have a nice day!