In 1840, the population of Chicago was only 4,470. By the 1900, the city's population was 1,698,575. Which factor best explains the population change?

A.) African Americans escaping poverty and discrimination in the south
B.) The expansion of Chicago's boundaries into surrounding countries
C.) Chicago's location as a railroad hub between the east and the west
D.) Chicago's improvements in sanitation and health care

4 answers

Go West, young man, go west. And they went on railroads to the mid-west.
Thank you
Chicago's location as a railroad hub between the east and the west
It is the railrodes