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US agrees to pay France $15 million for the Louisiana territory
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US declares war on Britain over British interference with American maritime shipping and westward expansion
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The effort to maintain balance between free and slave states
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President Monroe declares that American continents are off-limits to further colonization of European powers
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Continental Congress adopts the Articles of Confederation, the first US constitution
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Authorized forced removal of Native Americans living in the eastern part of the country lands west of the Mississippi River
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Texas declares it's independence from Mexico
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US declares war on Mexico in it's efforts to gain California and other territories in the southwest
