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Leonard Calvert made Maryland a colony.
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Representatives come from Annapolis to plan the first constitution.
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Maryland becomes the seventh state.
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Francis Scott Key wrote The Star Spangled Banner.
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The first phonelines link Baltimore and New York.
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In Sharpsburg the Battle of Antietam kills 23,000 people on both sides.
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Maryland outlaws slavery.
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The U.S. Army opens its first testing center for weapons.
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The 19th amendment passes giving women the right to vote.
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Baltimore becomes the first large city to combine its schools for black and white students.
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