Question

which of these developments occurred during the 1950s and 1960s as the american middle class achieved greater levels of prosperity

Answer 1

the suburbs spread quickly

Answer 2

The answer is that suburban spread quickly. In the 1950s, the American Dream became an actual thing. It was within their reach was the chance to have a house on their own land, a car, a dog, and kids. Between 1950 and 1956 suburbs go up by 46% and thousands of acres of farm and forest were tuned into suburbs.