The United States experienced major waves of immigration during the colonial era, the first part of the 19th century and from the 1880's to 1920. Many immigrants <span>came to America seeking greater economic opportunity, while some, such as the Pilgrims in the early 1600's, arrived in search of religious freedom. Work Cited Website:</span> <span>www.history.com/topics/u-s-immigration-before-1965</span>
