Chronology of Immigration in the United States

<p> The United States is truly a nation of immigrants. While it was very sparsely populated by mostly Native Americans in 1600, today it is a nation of about 300 million people, most of whom are immigrants or descendents of immigrants. Before the landmark Immigration and Nationality Act of 1965 (which abolished national-origin quotas), about 40 million immigrants had come to America, most of them from Europe. Since 1965, another 40 million immigrants have arrived, primarily from Mexico and