What event helped California become a U.S State?

The event that helped California become a U.S. State was the California Gold Rush.

To find the answer to this question, you can follow these steps:

1. Start by understanding the context of California's statehood. California was previously a part of Mexico until the Treaty of Guadalupe Hidalgo ended the Mexican-American War in 1848, which ceded California to the United States.

2. Identify significant events that led to California's statehood. One of the most important events was the California Gold Rush which began in 1848 when gold was discovered at Sutter's Mill in Coloma, California.

3. To verify this information, you can consult reliable sources such as history books, articles, or educational websites. Look for information about the California Gold Rush and its impact on the statehood of California.

4. Additionally, you can use search engines to find specific sources that highlight the relationship between the California Gold Rush and the statehood of California. Searching for keywords like "California statehood" and "California Gold Rush" should provide you with relevant information.

By following these steps, you should be able to find information about the California Gold Rush as a significant event that helped California become a U.S. State.