To stop them exporting their cotton in exchange for war-supplies.
It is estimated that about 22 Union ships were sunk by Confederate torpedoes. There were also about 12 ships that were seriously damaged by torpedoes.
What country built confederate ships
Confederate leaders agreed to let food supplies in, but then attacked the ships.
Ferdinand Magellan's ships were the first to go around the world. This was called a circumnavigation and took place in about 1520.
Cause: Union ships were going to take supplies to the Fort when Confederate forces attacked the supply ships. Effect: The Civil War began
These ships were called blockade runners
5
453 miles
South America
So ships don't have to go all the way around So America
South America
South America