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January 24, 1848
An 1849 handbill from the California Gold Rush. PD. The discovery of gold at Sutter's Mill on January 24, 1848 unleashed the largest migration in United States history and drew people from a dozen countries to form a multi-ethnic society on America's fringe.
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January 24, 1848 and ended in 1855 with 300,000 participants
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