Well, people started specializing in things and if they couldn't get something because they didn't know how to make it, they would trade for it. Fast forward 8000 years, companies like Coca Cola make coke and fanta and others can't make it because they're specialized for it. They trade for it with the entire world and other companies make things that Coca Cola owners buy.
Answer:
C
Explanation:
Significance- The Cotton 'Gin enabled cotton to be cleaned of seeds much faster than by hand. It also increased the need and demand for slavery as a major labor force in the South. Interchangeable parts enabled the modernization of weapons and other machine parts.
The correct awncer is because
B.
Public opinion was very much against Hoover
The answer to your question is C.