Answer: The large population increase of Chinese immigrants to the United States occurred primarily during the mid-19th century to early 20th century, during the period of Chinese immigration known as the "Chinese diaspora." Chinese immigrants came to the United States in large numbers during this time due to factors such as economic opportunities, the California Gold Rush, the building of the Transcontinental Railroad, and political unrest in China. However, Chinese immigrants also faced significant discrimination and hardship in the United States, including the Chinese Exclusion Act of 1882, which restricted Chinese immigration and made it difficult for Chinese immigrants already in the United States to bring over their families.
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