There have been four major waves of immigration to the U.S., beginning with settlers from northern and western Europe seeking land on the frontier from 1820 to 1880. The immigrants counted in the 1900 Census hailed primarily from southern and eastern Europe, drawn by the call of industrialization in America. At the advent of the era of world wars, there was a dearth of immigration, but after 1965, individuals from Asia and Latin America began to move to the U.S. in droves.