Homer Plessy violated the Separate Car Act. He violated this law by sitting in the railroad car designated for whites only when he was considered black.
"initiate revenue bills, impeach federal officials, and elect the President in the case of an electoral college tie" - I quote from Hal Rogers
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"C. the results of the Mexican War"
The compromises were reached concerning enslaved people were The Northern states <span>had already banned the slave trade. They wanted to prohibit it nationwide.</span>