Which territory did the United States claim after the War of 1812?

• A. Oregon
• B. Florida
• C. Texas
• D. California

Answer: (A)

Westward expansion and competition for lands after the War of 1812 shaped what the United States pursued next. Americans were eager to reach the Pacific, so Oregon Country became a prime area of claim and settlement. Exploration and fur trade stirred U.S. interest, and the government argued for American presence based on discovery and occupancy. Britain and the United States even agreed in 1818 to joint control for a time, showing both sides claimed the region. This emphasis on expanding to and organizing land in the Pacific Northwest is why Oregon is the best fit for the territory the United States claimed after the War of 1812. The other options were not the immediate focus of postwar claims: Florida was won later through a treaty with Spain in 1819, while Texas and California came into U.S. hands through events later in the 19th century.