The question refers to the Bear Flag Revolt, which was a short-lived independence rebellion precipitated by a group of American settlers in California against Mexican rule.
When : The Bear Flag Revolt occurred in June 1846.
Where : It took place in California.
Who : It was led by American settlers, notably William B. Ide. John C. FrΓ©mont, a U.S. Army officer, was also involved.
What happened : The settlers declared independence from Mexico and proclaimed the California Republic. This was marked by raising a homemade flag featuring a bear, which gave the revolt its name.
Why : Tensions were high between American settlers and the Mexican government due to various conflicts over land ownership and governance.
US Government role : At the time, the United States Government was at war with Mexico (the Mexican-American War began in April 1846). The U.S. forces quickly took control of California, and the Bear Flag Republic was short-lived. In July 1846, U.S. Navy Captain John D. Sloat landed at Monterey and claimed California for the United States, ending the independent California Republic movement.
Outcome : California eventually became a part of the United States following the signing of the Treaty of Guadalupe Hidalgo in 1848, which ended the Mexican-American War.