Chap 11 By EverythingCounts1 Jul 12, 1792 Robert Gray reaches mouth of columbia river Sep 21, 1810 rebellion of 80000 people led by Father Miguel Apr 21, 1811 Astoria is founded Apr 21, 1820 Russia and Spain give up claim of Oregon Apr 21, 1821 Mexico becomes independent Apr 21, 1822 Texas colony is started Jun 24, 1830 Joseph SZmith Church is founded Mar 2, 1836 Texas Declared their Independence Apr 21, 1840 American fur trading era comes to a close Apr 21, 1844 Mexico and Texas sign peace treaty Apr 21, 1844 Henry Clay chose as presidential canidate Apr 21, 1845 Zachary Taylor leads army into disputed region Apr 21, 1846 Great Britain and U.S sign Treaty Apr 21, 1848 Treaty of Guadalupe Hidalgo Apr 21, 1849 80000 gold seekers come to California