The city of San Francisco, California, was a shipping port and needed wood to make shipping docs and buildings. They needed to get the wood from Washington.
The workers in Washington floated logs downstream and tied them together, and ships pulled the piles of logs to San Francisco.
The Pacific ocean, and Washington's deep rivers were full of fish. Native Americans and pioneers would sell the fish to other countries. Then the fishing industry changed after Robert Hume built a plant that used cans and high heat to preserve fish.
In the Puget sound lowlands and the Cascade Mountains, miners discovered coal. The coal was burnt to heat homes and provide power that ran machines and factories. Coal mining was very important to Washington's economy well into the 1900's.
In the Walla Walla valley farmers grew crops and wheat. The Native Americans and white men worked together in the fields, which opened the door Chinese and Hispanic males to also join.
Due to loss of land and water rights, cattlemen had to move to the cascade foothills. The growth of cattle caused conflicts later with Native Americans when ranchers crossed into their lands.