The 1920s were a successful period of time for the us economy because people started to make appliances like cars and home appliances. People had more time and more money. So with that money that had they were eager to buy the newest items. These people were able to afford almost everything. When everyone bought all of those new appliances the US economy gained more and more money.
The workers in the factories were benefited in the boom because conditions used to be HORRIBLE. They started to make their factories cleaner and started paying the workers more.With that money they earned they were able to support their families.
Im sorry I couldn't answer all of them or make them all 500 words. Maybe you can add something that I forgot to write. Hopefully that this has helped you.