I think it is B because Brooker T. Washington wanted everybody to be able to read.
Answer:
The 1920s were an age of dramatic social and political change. For the first time, more Americans lived in cities than on farms. The nation's total wealth more than doubled between 1920 and 1929, and this economic growth swept many Americans into an affluent but unfamiliar “consumer society.”
Explanation:
It is a river that has devastating floods in north china