Why did the united states traditionally oppose imperialism?
a) because there were plenty of raw materials within u. s. borders, so there was no need to go outside
b) because the monroe doctrine was against it
c) because the military lacked the power of other nations
d) because the united states had originally been a colony and was against colonizing others

B) because the Monroe Doctrine was against it

Explanation:

The Monroe Doctrine was delivered by President James Monroe on December 2, 1823, in the US Congress. In his statement, James made it clear that the American continent should not accept any kind of European imperialism and meddling in any respects, that is, "America for Americans."

The ideology of the doctrine was based on three basic principles: the impossibility of creating new colonies across the continent, intolerance of interference by European nations in domestic affairs, and US non-participation in conflicts involving European countries.

The doctrine was against imperialism in lands of the American continent, it is so true that the United States was the first to recognize the independence of the countries previously colonized by Spain.