Suburbs are literally rooted in racism. That sounds hyperbolic, but the first suburb in post-war US was a planned whites-only community to escape the city. (Le

Suburbs are literally rooted in racism. That sounds hyperbolic, but the first suburb in post-war US was a planned whites-only community to escape the city. (Levittown) --- With that said, yes, the US purposefully planned blocks of cities to be dedicated to one purpose. This promotes car culture which, surprise surprise, car and oil companies were big into lobbying to shut down mixed use and public transit, and continue to be. Mixed use areas are typically either big cities, have pre-war origins where it has basically always been mixed use or typically both.