How does the cotton gin operate? What will be an ideal ...

[vicky]

How does the cotton gin operate?
 
  What will be an ideal response?

Question 2

Why was agriculture necessary to the development of civilizations?
 
  What will be an ideal response?

[Liamb2179]

Answer to Question 1

The cotton gin consisted of spikes on a revolving drum that passed through slots and
separated the lint from the seeds. A rotating brush then removed the lint from the seeds.

Answer to Question 2

Before a civilization could exist and prosper, it first had to have a strong agricultural
system. When people had to spend all their time hunting and gathering food or trying to
grow food, they had little time for anything else. Efficient agriculture allowed fewer
people to raise the same amount of food for the population. Therefore, other people had
time to protect the population, create works of art, construct buildings, and so on.