Mexican people had to do farmers work. and the African had to be the slaves for the white people maybe you should hear those from. roll of thunder hear my cry that can answer it
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Chinese soldiers
The Chinese soldiers had dispersed over 300,000 soldiers to North Korea as a result of USA failure to honor the 13th parallel agreement. The USA forces were caught unaware and had to tactically withdraw to south Korea, which resulted in the truce and not removal of the communist regime in North Korea.
Manchuria is the answer because the Japanese invaded on 1931