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1820s 1830s American pioneers migrate into west lands1823 Texas won indepence from Spain1830 Americans outnumbered Mexicans1829 Mexico outlawed slavery1834 General Lopez was dicator and abolished fed system of gov1844 U.S. Senate rejected treaty of annexation of John Tyler for Texas1842 Webster-Ashburton Treaty (Maine and Canda)1844 Election of Polk the "dark horse"1846 Treaty that gave Britain Vancouver Island and half of Oregon to US1846 General Taylor led army across the Rio Grande borderTreaty of Guadalupe Hidalgo US got New Mexico and California1853 Gadsden Purchase1852 Franklin Pierce (President) was pro Southern and did Ostend Manifesto (Cuba)1850 Clayton-Bulwer Treaty Britain and US can't make canal in Central America .1867 Alaska1848 Gold CA1830s Congress Preemption Acts gave cheap land1844 electric telegraph Samuel Morse1850 Illinois Central Railroad funded1854 Perry pressured Japan to sign Kanagawa Treaty1857 PanicPoner en grupo
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