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Hernando de Soto of Spain was the first European to explore Arkansas.
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A group of 1,300 half-starved colonists abandon Arkansas Post after John Law's scheme to develop the Mississippi Valley collapses.
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The United States purchases the Louisiana Territory from France
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Edward Payson Washburn paints The Arkansas Traveler.
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A group of unionist abolishes slavery in Arkansas Skirmish at Benton, AR and Pleasant Hill, MO
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Battle of Pea Ridge in northwest Arkansas.
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Diamonds found near Murfreesboro, which becomes the site of the only diamond mine in the United States.
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Bill Clinton is elected the 42nd President of the United States.
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Arkansas returns a Republican majority in the Presidential vote.
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The first African American is elected President of the United States: Barack Obama.