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it provided for selection of government employees through competitive examinations. it also made it unlawful to fire or demote covered employees for political reasons or to require them to give political service or payment, and it set up a civil service commission to enforce the law.

explanation:

food chain i would say only because there is competition on getting food and survival

this act gave the federal government the power to relocate any native in the east to territory west of the mississippi river.