What was the major cause of the increased ethnic concentrations of nonwhite populations in U.S. cities during the 20th century?

Question

Quizplus · Accepted Answer

White flight to the suburbs was the primary cause of increased ethnic concentrations of nonwhite populations in US cities during the 20th century. As white Americans moved out to the suburbs, nonwhite populations were left behind in increasingly segregated urban neighborhoods. This was exacerbated by discriminatory housing policies and practices that limited where nonwhite Americans could live. Rural-to-urban migration, rising international immigration, and higher birthrates among nonwhites also contributed to the trend, but white flight was the main driving force.

What Was the Major Cause of the Increased Ethnic Concentrations