Urban sprawl is a big problem in America, especially in California. It's when cities spread out too much, causing issues like environmental damage and high costs. Sprawl is not like traditional neighborhoods where you can walk to places - it's more like big housing areas, malls, and highways far from the city center. This kind of development is happening in many cities across the country, not just in big ones like Atlanta or Phoenix. It's been happening for the past sixty years, with people moving away from cities to live in suburbs.