1. The Oregon Territory was Established – On October 23, 1838, the Oregon Territory was established. The region, which encompassed what is now the states of Oregon, Washington, Idaho, and parts of Montana and Wyoming, was initially controlled by both Great Britain and the United States until a treaty in 1846 put the full territory in American hands.

2. The Oregon Trail was Founded – On October 23, 1843, a group of pioneers set out from Missouri to Oregon along what would become known as the Oregon Trail. The trail became a major migration route for over 400,000 pioneers who traveled west in search of new opportunities.

3. First Oregon Ship Built – The first ship to be built in Oregon, the Columbia Rediviva, was launched on October 23, 1792. The ship, which was constructed in Astoria, was used to explore the Pacific Northwest coast and trade with native tribes.

4. Women’s Suffrage Day – On October 23, 1912, Oregon became the seventh state to grant women the right to vote. The state legislature passed a women’s suffrage amendment, which was later ratified by voters.

5. Oregon Statehood Day – On October 23, 1861, Oregon became the 33rd state in the union. It was the first state to be admitted with a constitution that prohibited slavery.