1. On February 25, 1859, Oregon was officially admitted as the 33rd state in the United States. The state's population had grown rapidly in the previous decade due to an influx of settlers on the Oregon Trail, and statehood was seen as a necessary step for establishing government and infrastructure.

2. In 1933, the Oregon governor's mansion, known as Mahonia Hall, was completed and occupied for the first time. The mansion was built in the Colonial Revival style and has served as the official residence for Oregon's governor ever since.

3. On February 25, 1952, a train derailment near Swamp Creek in Washington County resulted in the death of five people and the injury of 37 others. The incident was caused by a landslide that had occurred earlier in the day and swept away part of the track.

4. In 1972, the Oregon Department of Transportation announced plans to construct a new highway through the Columbia River Gorge. The project was controversial due to concerns about environmental damage and destruction of historic landmarks, and protests and legal challenges ensued for years.

5. On February 25, 2018, Oregon became the first state to implement a statewide rent control policy. The law limits rent increases to 7% per year plus inflation and provides protections against no-cause evictions for tenants who have lived in their homes for at least one year. The law sparked debate about how to address the state's rapidly rising housing costs and shortage of affordable housing.