Farming/ slavery.
This answer really depends on what the question is asking, the southern economy banked heavily off of farming, BUT it was impossible to provide and have such an abundance of crops without slavery. So, it depends on the options you have.
Hope this helps, man!
There were many areas where the US used an economic blockade. This is also known as an embargo, usually used to weaken a country at war. It gave several controls with assistance, ties, trade, and financial transactions are restricted.
The US used this in Cuba, which gave pressure to their economy. Iran, Sudan, North Korea, Russia.
During the cold war it made an economic blockade with
