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Napoleon Bonaparte sold the Louisiana territory to America to help finance his war.
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The Atlantic slave trade was cut off and abolished.
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British forces burned the capital of the United States, Washington D.C., during the Battle of Bladensburg.
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The development of the railroad marked a huge significance for the development of transportation.
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This was stemmed from the U.S.'s annexation of Texas in 1845 as well as a dispute over whether Texas ended at the Nueces River or Rio Grande River.
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This treaty was an agreement between the U.S. and Mexico in which the U.S. agreed to pay $10 million for a 30,000 square mile portion of Mexico. This would later become part of Arizona and New Mexico.
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The South was unhappy with the government's regulations and they believed slavery should dominate, so they left the Union and split America.
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This war between the North and South states, that lasted four years, primarily existed because the controversy of slavery.