The answer is A because the white southern did not want to share a school with African Americans
I believe the answer is: 1. Depreciating and 2. Fewer
When a currency depreciate, the purchasing power that the currency had toward imported product would decrease. When this happen, the the currency would be seen as less valuable by people from another country, which cause the price of the currency to be lower in foreign exchange market.
A. Some type of mass extinction event occurred during this time
I think this means, when they relinquished some sovereignty that they are loosing rights to rule over things they previously owned.