Answer:
Discovery of Gold
Step-by-step explanation:
The Discovery of Gold in California led to the Gold Rush in 1848 which led the people to move in search of gold. Many immigrants from Mexico and Eastern U.S. arrived in America especially in California in search of gold. The gold attracted thousands of Asian immigration on the west side of America (California). More than 300,000 people came to California in search of Gold. The gold rush remained for only seven years (1855).