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Read the information below:

In 1840, the population of Chicago was only 4,470. By 1900, the city's population was 1,698,575.

Which factor contributed most to the population change?

African Americans escaping poverty and discrimination in the South
The expansion of Chicago's boundaries into surrounding counties
Chicago's location as a railroad hub between the East and the West
Chicago's improvements in sanitation and health care



Answer :

Africans American escaping poverty and Discrimination in the South

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