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Problem for the Native Americans because they used the buffalo for the hides, horns, and meat.

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Government legislation that attracts more people out to the West.

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in 1849 the large migration of people to the west in search of gold.

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a small mission where a group of Texan and American soldiers were killed by the Mexican army; became a rallying cry for the war "Remember the Alamo!"

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One of the most famous trails to the west.

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California free state, slave trade outlawed in DC, new fugitive slave law, popular sovereignty.

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cut into thirds.

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constructed to open up travel to the West.

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was a U.S. congressman, senator, statesman, and a twice-unsuccessful presidential candidate from the Whig Party.

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with early cries of "54 40 or fight" it looked like the United States might have to fight Great Britain for control of Oregon.

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sent out by Thomas Jefferson to map the Louisiana territory and record their findings concerning flora, fauna, and native groups.

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$15 million deal between the US (Jefferson) and France (Napoleon); resulted in doubling the size of the United States and giving the U.S. control of the Mississippi River and the port of New Orleans.

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Texas as an independent country.

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The war officially ended with the February 2, 1848, signing in Mexico of this treaty. It also added an additional 525,000 square miles to United States territory

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Most of the fighting was in Mexico, on foreign soil.

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brought into the US.

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President at the time.