ch.11 By nelsomi08 Apr 21, 1800 americans started going west Period: Apr 21, 1800 to Apr 21, 1850 expanding west Apr 21, 1811 John jacob Astor founded a fur-trading poast Apr 21, 1821 mexico began to change old spanish policies Jan 24, 1830 smith and his growing number of converts left new york Oct 21, 1836 Texas declared independence from mexico Apr 21, 1840 The US had a large number of population Jul 20, 1840 fur-trading was starting to pick up Mar 24, 1844 bigham young became leader of the mormon church Jun 20, 1845 President polk ordered a army to go to disputed regions Mar 17, 1846 General tylor led his army to the rio grande Feb 14, 1847 42 miners died in the freezing cold Feb 16, 1847 two armies clashed at Buena Vista Apr 21, 1847 californios gave up the fight Mar 23, 1848 Oregon became a US territory