Among the Theories to Explain the New Imperialism,historians Have Proposed

Among the theories to explain the new imperialism,historians have proposed that

A) accelerated economic expansion in the late nineteenth century convinced several European states that new colonies would guarantee sources of raw material and markets for finished goods.
B) slowing European population growth required colonies for countries to continue to prosper.
C) although newly unified states showed no interest in colonies, more established states fueled the desire for colonies.​
D) the new imperialism, while important, actually had little impact on contemporary ideas concerning national pride and Great Power status.
E) all of the above