The Battle of Santa Clara, nicknamed the "Battle of the Mustard Stalks", was a skirmish during the Mexican–American War, fought on January 2, 1847, 2+1⁄2 miles west of Mission Santa Clara de Asís in California.

California is a state in the Western United States, lying on the American Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and the Mexican state of Baja California to the south. With over 38.9 million residents across a total area of approximately 163,696 square miles (423,970 km2), it is the most populous U.S. state, the third-largest U.S. state by area, and the most populated subnational entity in North America.