Over the last 100 years, the United States has experienced significant improvements in transportation and technology. As a result, urban centers of today differ from those of the 1800s in that modern cities will give point and brainlist
the anwser

A. are less likely to suffer from environmental pollution.

B. can be located farther from supplies of food and fresh water.

C. are more attractive to newly arrived immigrants.

D. can be reliant on one primary product or service for income.