How is the modern era different from the middle ages?

Who was the leader of the black nationalists in the 1920s?

What event from world war l does the image most likely depict

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.