What caused the demise of the Whig and Know-Nothing Party?

What three political groups came out of the french revolution?

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.

How did the united states ironically create a slaverybased market economy and democratic political system?