They had many effects by the diseases that they brought with them
African Americans continued to face a wide range of threats in the south, many of which were violent in nature such as threats of lynching and murder. Congress initially sent federal troops into the region to attempt to enforce the Reconstructions laws and mitigate these threats.
According to ourdocuments.gov
"<span>The Pendleton Act provided that Federal Government jobs be awarded on the basis of merit and that Government employees be selected through competitive exams. The act also made it unlawful to fire or demote for political reasons employees who were covered by the law. The law further forbids requiring employees to give political service or contributions. The Civil Service Commission was established to enforce this act."
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d. lower labor costs during the costs that are usually in the us with less workers less costs
Answer:
When the economy collapses