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
The Penguin History of the United States of America The Penguin History of the United States of America The Penguin History of the United States of America is a non-fiction book about the history of the United States written by Hugh Brogan and published by Penguin Books. It was originally titled "The Longman History of the United States of America", published by the Longman company from 1985 through 1999. Longman and Penguin are both part of Pearson PLC. The book starts in the pre-Columbian era and, in the first edition, ends in the mid 1970s. The second edition, or "new edition", added a chapter covering through to the end