Why Was The Souths Strategy called The king Cotton diplomacy?

It was called the King Cotton Diplomacy because A 'King' is in charge of everything and the south believed that if they didn't sell their cotton to Britain and France, then they would be forced to help break the North's blockades which is what a 'King' can do. The cotton part is obvious and 'diplomacy' international trade and trading with France and Britain is international. which is why it is called the King Cotton Diplomacy. Don't try to argue with me :) its in the S.S teachers textbook. :)