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  The Constitution is ratified - All white, land-owning males could vote.
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  Last religious prerequisite for voting is eliminated.
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  Property ownership and tax requirements eliminated by 1850. Almost all adult white males could vote
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  The 15th Amendment is passed. It gives former slaves the right to vote and protects the voting rights of adult male citizens of any race.
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  The 19th Amendment guarantees women's suffrage.
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  The 23rd Amendment allows voters of the District of Columbia to participate in presidential elections.
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  The 24th Amendment bans the poll tax as a requirement for voting in federal elections.
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  Dr. Martin Luther King, Jr., mounts a voter registration drive in Selma, Alabama, to draw national attention to African-American voting rights.
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  The 26th amendment sets the minimum voting age at 18.