washington history By isaiah527 May 30, 1805 lewis and clark reach washington May 30, 1811 jacob astor began white settlement of oregon May 30, 1836 marcus whitman and his wife established an indian school and mission near walla walla May 30, 1841 the oregon trail was used by more than 50,000 people May 30, 1846 a treaty was negotiated by the US and the UK that formed washingtons boundaries Feb 8, 1853 creation of washington territory Nov 29, 1857 several men murdered the whitmans and 12 other people May 30, 1869 pacific and central pacific railroads finally met May 30, 1877 chief joseph led 300 indians toward canada battling 2000 soldiers and finally being cornered by soldiers 40 miles short May 30, 1883 northern pacific railroad linked washington to the east May 30, 1889 waashington was admitted into the union as a state May 30, 1897 gold was discovered north which started the klondike rush