Not a change that occurred in america in the 1920's? a. recognition of woman's rights. b. radio. c. automobile. d. steam locomotive.

D. Steam Locomotive

These were built during the Industrial Revolution which was in the late 1800's, not the 1920's.

Hope this helps :)

your answer is Steam Locomotive

i believe the answer is d. it was not uncommon for people to faint or even convulse at these high-energy meetings.