Final answer:
The California Gold Rush in 1849 led to a significant migration of people to California due to the discovery of gold by John Sutter.
Step-by-step explanation:
Huge numbers of people moved to California in 1849 because John Sutter discovered gold. This event, known as the California Gold Rush, attracted people from all over the United States and even from abroad. The prospect of finding gold and becoming rich quickly motivated individuals to pack up and head west in search of wealth and opportunities.
Learn more about California Gold Rush