In 1990, what was the population density near Chicago?
A.
6 or fewer people per square mile
B.
18-45 people per square mile
C.
45-90 people per square mile
D.
90 or more people per square mile
A.
6 or fewer people per square mile
B.
18-45 people per square mile
C.
45-90 people per square mile
D.
90 or more people per square mile