What was the main purpose of the Monroe Doctrine? a
To keep Europeans from imperializing the United States.
b
To warn European powers not to interfere in the countries of the Western Hemisphere
c
To warn European powers not to interfere in the countries of the Eastern Hemisphere.
d
To outline what would happen if European countries interfered with countries in the Western Hemisphere.

B

Explanation:

because Monroe Doctrine was a treaty that agreed that States that the U.S. could use military force to get rid of European powers that entered and tried to conquer lands in the western hemisphere.

on the whole, dickens has shown the french revolution and its this site might you. good at his job, and the subject matter he chose, 

although the crusades failed to capture jerusalem, they had several major impacts on western europe. they increased the authority of the king: sometimes nobles died in battle without leaving an heir in which case the king got their land. kings passed taxes to pay for the crusades.