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Answer:Yes many groups were oppressed but mostly the japanese citizens but african american progress also had great strides.
Explanation:during the second world war groups of japanese citizens were sent to a americanized form of concentration camps almost all had nothing to do with the war in the east. But the african americans had great progress being able to fly planes for the army and being very efficient protecting most of there assigned bombers in formation but for the most part they did not see much real action in the front considered inferior to white soldiers.
Chinese Americans faced the brutality of the Irish, who were the main competition for jobs. Labor Unions also disliked the immigrants, who were used as 'strike breakers' because of their need for jobs. After the Chinese Exclusion Act, the Chinese still created there own new element of American Society--Chinatown.