Answer:
Grand Bahama Island had a decreasing population in the 19th century because of Nassau, but after the Civil War began in 1861, Grand Bahama Island's population doubled because of the blockade runners' actions. Blockade runners would take cotton from Charleston to Nassau, a trip of 560 miles with 48 hours of sailing.
The blockade had a negative impact on the economies of other countries. Textile manufacturing areas in Britain and France that depended on Southern cotton entered periods of high unemployment, while French producers of wine, brandy and silk also suffered when their markets in the Confederacy were cut off.
Step-by-step explanation: