テキサス併合
Polk Street is named for James Knox Polk (November 2, 1795 – June 15, 1849) the 11th President of the United States (1845–1849). During the Mexican–American War, and after the Texas annexation, Polk turned his attention to California, hoping to acquire the territory from Mexico before any European nation. The main interest was San Francisco Bay as an access point for trade with Asia.