Answer:
Complicated
Explanation:
The main reasons for America's economic boom in the 1920s were technological progress which led to the mass production of goods, the electrification of America, new mass marketing techniques, the availability of cheap credit and increased employment which, in turn, created a huge amount of consumers.
Im not completely sure but i think its A
Answer:
copy this website and put it in your browser it should help you a little https://www.ushistory.org/us/32e.asp
Explanation: