They rejected it because they did not want the United States to get involved in foreign wars.
Explanation:
African Americans came back as liberators
Women worked when the men fought
Japanese Americans were sent to internment camps, wrongfully suspected as potential traitors
In “Of our Spiritual Strivings” from the book The Souls of Black Folk, DuBois points out the racial discrimination that African Americans underwent and the suffering that resulted from it. He also mentions double consciousness, which is the individual sensation of feeling as if ones identity is divided into several parts making it hard to have a sense of identity. These experiences are still relevant as there is still racial prejudice such as in the Criminal Justice system
It was mainly the "C. Imperial nations, such as the United Kingdom and France," that benefited most from 19th-century imperialism, since these were the nations that were extracting the resources from the colonies.