Was there a distinct american culture, society, or people in 1750? yes or no? why?

What pact signed on 1949 reinforce that the united states would not return to an isolationist policy

When and why did the united states enter world war 2

The idea of manifest destiny simply stated it was america's destiny to expand from the atlantic ocean to the pacific. the word "destiny" implies an idea that it was within our rights as a nation to expand. in a paragraph of 125+ words, explain what could be wrong with that idea.