Office of Price Administration (OPA) was a governmental agency that controlled the prices and use of consumable items. The U.S. Office of Price Administration controls costs of consumable items through the conflict: Created in August 1941, the U.S. Eighteen shipyards across the U.S. Henry Kaiser, giá xây nhà tại Đồng Xoài father of American shipbuilding, cranks out ships for the battle effort: Known as the father of trendy American shipbuilding, Henry Kaiser owned seven shipyards during the warfare.