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United States payed $15 million to receive the territory which extends west from the Mississippi River to the Rocky Mountains.
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Lewis and Clark set out to explore the unknown territories of the Louisiana purchase.
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U.S. declared war on Britain over Britian's interference and prevetion of American shipping to Europe and over their interference of America's westward expansion.
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Construction began on the Baltimore and Ohio Railroad. This is the first public railroad in the U.S.
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Mexican War took place in America's effort to gain California and other territory in Southwest.
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Gold is discovered at Sutter's Mill in California. After news spread that gold had been discovered there, thousands of Americans dropped everything they had and moved to California.
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Gadsden purchase was made for $10,000,000 from Mexico.
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Abraham Lincoln, one of the greatest and most remembered presidents of the America, was elected on this day. His election spurred on the most brutal and deadliest war in American history.
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11 states had seceded from the U.S. and the Confederate states were formed. Jefferson Davis was elected as president of them a day later.
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U.S. adopted standard time.
