Final answer:
The state of Washington is located south of Oregon.
Step-by-step explanation:
The state of Washington is located just to the south of Oregon.
The Oregon Territory, which originally included present-day Oregon, Washington, Idaho, and British Columbia, was a disputed region claimed by Spain, Russia, Britain, and the United States. Eventually, Spain and Russia dropped their claims, leaving Britain and the U.S. as the remaining contenders. The U.S. claim to Oregon was strengthened by the migration of American settlers over the Oregon Trail in the mid-1840s.
Therefore, the statement that the state of Washington is located just to the south of Oregon is true.