The Primary reason of Chinese immigrants coming to the United States in the early 1850s was to join the California Gold Rush.
The California Gold Rush was all about by the discovery of gold nuggets in the Sacramento Valley in early 1848 and was undoubtedly one of the most vital events to shape American history during the first half of the 19th century.
Lured by news of the California gold rush, some 25,000 Chinese had migrated there by the early 1850s.
Life in the gold fields exposed the miner to loneliness and homesickness, isolation and physical danger, bad food and illness, and even death.
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