Help pls asap, i’ll give u points :)

Why were inventors essential or necessary for an industrial revolution to happen in america

What does the country say concerning the status of free blacks living in the united states? a) they have the same rights as any other "free" people, and are full citizens. b) they have the same rights as any other "free" people, but are not properly citizens. c) they are citizens, but don't have the full rights granted to other citizens. d) they are not citizens, and have no right to petition the court.

During the 1920’s why did the us policy change