California is bordered by three states: Oregon to the north, Nevada to the east, and Arizona to the southeast.
Explanation:
1. Oregon: Located to the north of California, Oregon shares a border that stretches along the northern edge of California. This border is defined by the 42nd parallel north.
2. Nevada: To the east of California lies Nevada. The border between California and Nevada runs along the Sierra Nevada mountain range and is marked by the 120th meridian west.
3. Arizona: To the southeast of California is Arizona. The border between California and Arizona is defined by the Colorado River, which flows along the southeastern edge of California.