What demographic factor increased significantly as a result of the Immigration and Nationality Act of 1965?

The Immigration and Nationality Act of 1965 brought significant changes to the U.S. immigration system by abolishing the National Origins Formula, which had been in effect since the 1920s and heavily favored European immigrants. As a result, the demographics of immigration changed drastically.

The Act opened the door for a large influx of immigrants from non-European countries, particularly from Asia and Latin America. This change was characterized by a shift towards accepting immigrants based on family reunification and skills rather than their country of origin. Consequently, this led to a significant increase in the number of immigrants coming from diverse backgrounds, which had previously been underrepresented in U.S. immigration. This demographic shift laid the foundation for the multicultural society that the United States has today, reflecting a broader array of cultures, languages, and traditions brought by these new immigrants.