sec 3 summary

in the 1920s It was the first time the US lived in where

cities

Between 1915 and 1970 around how many million African-Americans moved out of the rural south into northern cities

6 million

Since 1870, an estimate of how many new immigrants had coming into the country

26 million

The zoning laws were used to help with what

Manage Sprawl, create orderly cities, integrate industrial areas from residential areas