How is the world price of a good in a two-country world determined? Multiple choice question. By adding up the two demand curves and adding up the two supply curves and finding where those total curves intersect. By taking the supply curve for the larger country and the demand curve for the smaller country and seeing where they intersect. By taking the demand and supply curves in the larger country and their domestic price will also be the world price. By taking the demand curve for the larger country and the supply curve for the smaller country and seeing where they intersect