Britain deal with U.S. cotton trading by purchasing American cotton surplus.
The Central Powers can be referred to as the Central Empires, and they serves as the part of coalitions who fought World War I, they comprises German Empire, Austria-Hungary and others.
Britain Britain forbade the sale of cotton to the Central Powers, and that's why they do buy in surplus from United States.
Learn more about Central Powers, at;
https://brainly.com/question/651584