Gold Confirmed in California: The Gold Rush Begins

President James K. Polk confirmed before Congress on December 5, 1848, what rumor had been whispering for months: gold had been discovered in extraordinary quantities in California. Polk displayed a tea caddy containing 230 ounces of California gold to a stunned chamber, transforming a distant territorial acquisition into the most frenzied mass migration in American history. Within weeks, the Gold Rush was on. James Marshall had first spotted gold flakes in the tailrace of John Sutter's sawmill at Coloma on January 24, 1848, just nine days before Mexico formally ceded California to the United States in the Treaty of Guadalupe Hidalgo. Sutter tried to keep the discovery secret, fearing it would destroy his agricultural empire. He was right. Workers abandoned his fields, squatters overran his land, and his vast holdings were eventually consumed by the rush he had tried to suppress. Polk's message to Congress served as an official confirmation that catalyzed a global migration. Approximately 300,000 people descended on California between 1849 and 1855. They came from the eastern states, Mexico, China, Chile, Australia, and Europe. San Francisco, a sleepy settlement of 200 in early 1848, exploded into a city of 36,000 by 1852. Ships were abandoned in the harbor as their entire crews deserted for the gold fields. The Gold Rush produced enormous wealth but distributed it brutally. Most individual miners went broke. The real fortunes went to merchants, landowners, and companies that supplied the miners. California's Native American population was devastated by violence, disease, and displacement, dropping from roughly 150,000 to 30,000 within two decades. California achieved statehood in 1850, entering the Union as a free state and intensifying the sectional crisis that led to the Civil War. Polk's tea caddy set all of it in motion.