History of immigration to the United States 1850. In 1848, the Treaty of Guadalupe Hidalgo, concluding the Mexican War, extended U.S. citizenship to approximately 60,000 Mexican residents of the New Mexico Territory and 10,000 living in California. An additional approximate 2,500 foreign born California residents also become U.S. citizens. In 1849, the California Gold Rush attracted 100,000 would-be miners from the Eastern U.S., Latin America, China, Australia, and Europe. California became a state in 1850 with a population of about 90,000. Between 1850 and 1930, about 5 million Germans migrated to the United States, peaking between 1881 and 1885 when a million Germans settled primarily in the
United Gates of America United Gates of America United Gates of America is a 2006 BBC television documentary directed by Alex Cooke, featuring journalist Charlie LeDuff. He lived for a month within the gated community of Canyon Lake in Riverside County, California, to try and discover why people wanted to lock themselves behind gates and fences, and what effect it had on the residents. The documentary also explored the issues of immigration from Mexico and Central America, and highlighted the issues of segregation and racism that exist in the United States. The one-hour made-for-TV documentary premiered on British TV channel BBC Four in 2006,