Answer:
Eleven million people migrated from rural to urban areas between 1870 and 1920, and a majority of the twenty-five million immigrants who came to the United States in these same years moved into the nation's cities. By 1920, more Americans lived in cities than in rural areas for the first time in US history.
(This is the right answer but this isn't MY answer so credits to the rightful owner for these answers, I just hope this helps :)
