1. In 1945, President Harry Truman signed the United Nations Charter in Washington D.C., establishing a new international organization aimed at promoting peace and security worldwide.

2. On July 5, 1852, the Washington State Constitution was adopted during the Constitutional Convention in Olympia, Washington. This document established the foundations for the state's government and has been amended over the years to reflect changes in society and technology.

3. In 1937, the U.S. Treasury Department announced its plan to replace Washington's portrait on the one-dollar bill with a depiction of the Great Seal of the United States. The seal remains on the bill to this day.

4. The first National Rainbow Gathering was held in the Mount Baker-Snoqualmie National Forest near North Bend, Washington on July 5, 1972. The gathering, which drew thousands of participants, was organized by a loose network of hippie counterculture activists and featured music, poetry, and discussions about alternative lifestyles.

5. On July 5, 1916, the Everett Massacre occurred in Everett, Washington during a labor dispute between the Industrial Workers of the World (IWW) and local business owners. The conflict resulted in the deaths of at least five people and showed the tough stance that the state would take against labor organizations for years to come.