Final answer:
The costs of sprawling communities include traffic congestion, pollution, overcrowded facilities, and increased crime rates, which can outweigh the benefits of living in a single giant city.
Step-by-step explanation:
Expanding cities and urbanization can bring economic advantages in the form of economies of scale. However, there are several costs associated with sprawling communities that were discussed in your text and class. These costs include traffic congestion, increased pollution, overcrowding of facilities like parks and museums, and the potential for higher crime rates.
All these factors can act as a counterbalance to the benefits of being geographically close to one another, making it less desirable for all or most people to live in one giant city.