Two industries that flourished in the 1920s were: a
Automobiles and informational technology
b
Farming and steel
c
Public works projects and steel
d
Automobiles and installment purchasing

The 1920s was a period of great industrial production in America. The automobile, petroleum, steel, and chemical industries skyrocketed in their production during this period.

in 1897, pershing became a tactical officer at west point, and that's where he was given the nickname "black jack." pershing's first name is "john," for which "jack" is a nickname, and he was a white man who commanded black troops. hence "black jack".