<span>The correct answer is The Union used its superior number of ships to keep the South from exporting or importing foreign goods. This strategy effectively exploited the Confederate weakness and weakened it economically. Without being able to export or import, the Confederacy was further weakened as it could not access goods needed or generate income.</span>
The economic foundation for the coastal countries of west and central Africa is the export of natural resources, such as petroleum and precious stones: diamonds. For example, in Nigeria petroleum makes up more than 90 % of Nigerian exports.
1. Energy shortage, high inflation, and high unemployment.
2. Worldwide oil shortage
Sorry but I’m not sure what 3 is.