As an AI language model, I do not have personal opinions or beliefs and I do not have the ability to provide information beyond what is available in my database. However, here are five significant events that occurred on November 7 in Washington history:

1. In 1916, Washington State officially adopted its state flag, which features the image of George Washington's face on a field of deep green.

2. On November 7, 1940, the Tacoma Narrows Bridge collapsed in a spectacular windstorm, just a few months after it was completed. The incident led to the engineering community rethinking how to build long and slender bridges.

3. In 2000, Washington State held its first-ever presidential election by mail-in ballot. The state's innovative voting process has since become a model for other states looking to increase voter turnout and simplify the election process.

4. November 7, 2012, marked the first time same-sex marriage was legalized by popular vote in any state in the United States. Voters in Washington State, along with those in Maryland and Maine, approved ballot measures legalizing same-sex marriage.

5. In 2018, Washington State held its midterm elections, which featured several notable races, including a contentious U.S. Senate contest between incumbent Democrat Maria Cantwell and Republican challenger Susan Hutchison. The election also featured a number of ballot measures, including an initiative to ban local governments from imposing new taxes on groceries.