1. In 1877, the Great Railroad Strike began in Martinsburg, West Virginia, which quickly spread throughout the United States, reaching Washington State. The strike was a protest against unfair labor practices and low wages by railroad companies, and it lasted for almost two months.

2. In 1908, a major forest fire broke out in the town of Roslyn, Washington, destroying over 15,000 acres of forest land and leaving many people homeless. The fire burned for several days, and it took weeks for the smoke to clear. It was one of the worst forest fires in Washington State history.

3. On May 10, 1952, the Tacoma Narrows Bridge, which had just opened six months earlier, collapsed due to high winds. The bridge, which was nicknamed "Galloping Gertie" due to its tendency to sway in the wind, was a major engineering failure and a tragic event in Washington State history.

4. In 1977, the state legislature passed the Washington State Environmental Policy Act, which requires state agencies to evaluate the environmental effects of proposed actions before making decisions. This was a major step towards protecting the environment in Washington State.

5. On May 10, 1994, the Seattle Mariners played their first game in their new stadium, Safeco Field, which was built to replace the Kingdome. The Mariners won the game 3-2 against the Oakland Athletics. Safeco Field has since become a beloved landmark in Seattle and a popular destination for tourists and locals alike.