1. In 1850, the Molalla War began in Oregon. The war erupted between the settlers and the Molalla tribe when the settlers attempted to force the tribal people from their ancestral lands.

2. In 1916, the first gasoline tax was imposed in Oregon. The tax was designed to fund road construction and maintenance across the state.

3. In 1923, the Oregon Caves National Monument was established in the Siskiyou Mountains. The monument encompasses over 4,500 acres of protected land and features some of the most unique limestone caverns in the world.

4. In 1984, the first Nike Inde-X running race was held in Eugene, Oregon. The race featured elite runners from around the world competing for cash prizes and bragging rights.

5. In 2017, Oregon became the first state to legalize the use of psychedelic mushrooms for therapeutic purposes. The move was seen as a major victory for advocates of alternative medicine and mental health treatments.