The document discusses three waves of immigration to the United States: Old immigrants from northern Europe between 1600-1850 who settled on farms in the Midwest; New immigrants from southern and eastern Europe between 1860-1920 who moved to cities in the Northeast and worked in factories and mines; and modern immigrants since 1965 from Latin America and Asia. It notes the reasons for immigration included economic opportunities, religious/political persecution, and the promise of freedoms in the US. New immigrants initially arrived at Ellis Island or Angel Island and faced inspections before entering the country. Their expectations of America contrasted with the difficult living conditions they encountered in urban tenements and sweatshops. The massive immigration during this period resulted in a population shift from rural to urban