Nevertheless

Statehood[edit]

Main articles: Oregon boundary dispute, Provisional Government of Oregon, Oregon Treaty, Oregon Territory, Organic act § List of organic acts, Washington Territory, Admission to the Union, List of U.S. states by date of admission to the Union, and Mount Baker Gold Rush

Seattle in 1887
The growing population of Oregon Territory north of the Columbia River formally requested a new territory. As a result of the Monticello Convention, held in present-day Cowlitz County, U.S. Congress passed legislation and President Millard Fillmore signed into law on March 2, 1853, the creation of a new Washington Territory.^[53][22] The boundary of Washington Territory initially extended farther east than the present state, including what is now the Idaho Panhandle and parts of western Montana, and picked up more land to the southeast that was left behind when Oregon was admitted as a state; the creation of Idaho Territory in 1863 established the final eastern border. A Washington state constitution was drafted and ratified in 1878, but it was never officially adopted.^[54] Although never approved by the United States Congress, the 1878 constitution is an important historical document which shows the political thinking of the time; it was used extensively during the drafting of Washington state's 1889 constitution, the one and only official Constitution of the State of Washington. Washington became the 42nd state of the United States on November 11, 1889.^[55]
Early prominent industries in the new state included agriculture and lumber. In Eastern Washington, the Yakima River Valley became known for its apple orchards,^[56] while the growth of wheat using dry farming techniques became particularly productive. Heavy rainfall to the west of the Cascade Range produced dense forests, and the ports along Puget Sound prospered from the manufacturing and shipping of lumber products, particularly the Douglas fir. Other industries that developed in the state included fishing, salmon canning and mining.^[11][57]