Answer:
Bear Flag Revolt.
Step-by-step explanation:
On May 13, 1846, war broke out between the United States and Mexico. Unaware of this, American colonists living in California rebelled against Mexico on June 14, 1846 at the initiative of Captain John Fremont. The rebels imprisoned the Mexican commandant of Northern California and proclaimed the independent Republic of California. On July 7, an American fleet landed in California, reporting a war between the United States and Mexico. Two days later, on July 9, the rebels decided to liquidate the republic and include the Californian battalion formed in it under the command of Captain Fremont in the war with Mexico on the side of the United States.