Yes I think that's true well that's your awnser
I would say true because this was the time of "boom", as we called it.
A lot of mass production and all that ( More making cars, food, and lots more )
After that, however, was around the Great Depression, when lot's of things and people were lost.
Glad I could help, and good luck!
C. west africa is the correct answer
Building armories because Americans invented Atomic Bomb
