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end of The civil war and 13th amendment abolishes slavery
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15th amendment gives minority males the right to vote
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many southern states pass laws to take voting rights away from African Americans
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supreme courts declare the grandfather clause unconstitutional
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19th amendment grants women the right to vote
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supreme court declares that payroll taxes are unconstitutional
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24th amendment outlaws payroll taxes
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freedom summer is an attempt to register African Americans to vote in mississippi
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voting rights to act bans racial and ethnic discimination in elections