There are a couple of answers to this:
A: A lot of people back then were heavily Catholic, the Catholic church claimed that the Earth was flat, while others believed the Earth was round.
B: Back then, obviously they didn't have airplanes or satellites, thus people believed the Earth was flat. The reasoning of this is because, if you were to look outside right now, the Earth does look like it could be flat. (that is because you have to be at a certain level of elevation to see the curvature of the Earth). Eventually though, people started reasoning and came to the conclusion the Earth was round. (They were proven right when aerospace technology came around.)
My guess would definitely be false, public transportation seems like a much more reliable mean.
Answer:
1. 13th amendment
2. 15th amendment
3. 19th amendment
4. 1920
Challenges for growing crops are you don't know if it will be successful, you have to have enough water, the dirt has to be fertile, and the weather may affect how the plant grows.
B) harsh climate and transportation distances make it difficult and costly.
