South Carolina is all I've been able to find. If this wrong correct me, but I haven't found any other information.
The people in the south of the sahara did not develop the technique in melting iron. the technique was brought to them through the trans-saharan trade. it was a trade route frequented by merchants primarily from arabia and some parts of asia. trough the trading, the civilizations in the sahara over time adopted the technique for melting iron. this would be around 12th century
The plain produces enough food to feed a large population.
Answer:
It's economy droped.
Explanation:
During WWII a lot of money went for weapons, and by the end of it and we entered the Great Depression cause of it.
Depends on the country, for example the UK Prime Minister is elected by the public.
Hope this helps.