Well economically, South Carolina had a cash crop of rice. Rice could grow easily because of the swampy environment South Carolina could offer. The Carolinas both also had a cash crop of tobacco and indigo.
It is B because Gorbachev was the leader of the Soviets
No political parties
No permanent alliances
I don't remember if it was 2 or 3 if its a third I think its something like no more than 4yrs per presidential term
The polar ice caps will melt and the sea levels will rise which could possibly drown some islands and parts of countries