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The U.S based its claim on the discovery of the Columbia River. discovered by Robert Gray
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The U.S based claim on the Pacific Coast because of the Lewis and Clark EXpedition
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Mexico wants to attract more settlers, even Anglo settlers to farm its scarce populated land. The northern frontier province of Texas
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Soon the AMericans and the Mexicans start to have problems. The Mexicans outlawed slavery and required all immigrants to convert to Roman Catholicism. When the new settlers refused this new law, Mexico closed its borders to Texas. The want for land from the Americans made them ignore the Mexicans warnings and cross the border anyways.
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Americans outnumbered the Mexicans in Texas by three to one.
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General Antonio Lopez de Santa Anna declared himself dictator of Mexico and abolished the Texas nation's federal Goverment
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Many American Settlers didnt like this idea of a dictator. Led by Sam Houston and declared Texas to be an independent republic
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Americans believed their country's apparent destiny was to take undisoputyed possession of all of Oregon and to annex the Republic of Texas
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John tyler in 1841-1845 was a Whig who was worried about the arise of British influence in Texas. He wanted to annex Texas, and he worked for it. The U.S Senate rejected his treaty of annexation in 1844
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Samuel F.B Morse, successfully demostrated an electric telegraph. Which brings a new era to the United States
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Former president Martin Van Buren opposed immediate annexation in Texas due to the fact that slavery was allowed in Texas. But challenging him for John C. Calhoun a democrate. He also supported Proslavery and proannexation
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California soon gained a small population of Spanish-Mexicans wich was about 7,000
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The decision to annex Texas became a big problem with mexico. So soon taking office President Polk dispatched John Sidell as his special envoy to the Government in mexico city. hoping he could persuade Mexico to sell california and New Mexico and settle a dispute concerning the Mexico-Texas border
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John C. Fremont overthrew Mexican Rule in northern California and proclaimed California to be an independent republic
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David Wilmot proposed that an appropriations bill be amended to forbid slavery in any of the new territories acquired from Mexico
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A Mexican army crossed the Rio Grande and Captured an American army patrol, killing 11
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In California gold was discovered. This set off many quest to move to California to find gold in the mineral-rich mountains.
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The Clayton-Bulwer Treaty was agreed to by Great Britain and the United States
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federal land was granted to build Illinios Central Railroad from Lake Michigan to the Gulf of Mexico. It was 2.6 million acres of federal land, the first of such federal land grant
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Walker tried to take Baja California from mexico but didnt succeed
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Matthew C. Perry convinced Japan's government to agree to open two Japanese ports to U.S trading vessels.
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Walker takes over Nicaragua
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A financial panic ended the midcentruy economic boom at the end of 1857
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Due to the finding of gold, more and more people moved to California. In 1848 california's populatio was a mere 14,000 but because of the gold rush by 1860 the population sky rocketed to 380,000
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Secetary of State at the time, William Seward succeeded i purchasing Alaska
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The Hay-Pauncefote Treaty signed by Great Britain and the United States gave the United States a free hand to build a canal without British participation