But suburbanisation properly became a thing with policies of destroying public transport, and redlining that while invented in 1934, started to get massively ap

But suburbanisation properly became a thing with policies of destroying public transport, and redlining that while invented in 1934, started to get massively applied around 1947. Destruction of public transport made living in inner cities more difficult and in suburbs, relatively easier - and redlining made people feel compelled to move out out inner cities.