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Congress passed allowing Texas to become a state in the United States.
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Texas is offical part of the United States.
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On May 13, 1846 the United States declared war on Mexico. In February 2nd 1846 the Mexican-American war ended with the Treaty of Guadalupe Hidlgo. With the war ending the United States won California, Nevada, Utah, New Mexico, Arizona, and parts of Texas.
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David Wilmot suggests banned in new territorys that was won by the Mexican-American War if slavery. The North supported the "Wilmot Proviso," but the South did not, and it failed to become a law.
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Iowa becomes a free state and joins Union.
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Harriet Tubman helped slaves escape from the South to the North by the Underground Railroad. She at least helped 300 slaves get to the north.
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The United States Supreme Court rules 7 to 2 in the Dred Scott vs. Sandford case. The rulling was that salvery is protected by the Constitution and ban slavery in territories is unconsitutional.
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Republican candidate Abraham Lincoln gives a Address in New Haven, Connecticut. He says "Wrong as we think Slavery is, we can yet afford to let it alone where it is, because that much is due to the necessity arising from its actual presence in the nation; but can we, while our votes will prevent it, allow it to spread into the National Territories, and to overrun us here in these Free States?"
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The Democratic Party spilts, which many southern withdraw from June Democratic Convention.
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Abraham Lincoln of the Republican party was elected president. President Lincoln is anti-slavery.
