The General Agreement on Tariffs and Trade (GATT) was formed in 1947 as a temporary treaty between 23 countries to reduce trade barriers and negotiate tariff reductions. It was designed as a provisional substitute for the proposed International Trade Organization (ITO) that failed to materialize. Over successive rounds of negotiations, GATT helped reduce global tariffs and expand international trade. In 1995, GATT was subsumed into the World Trade Organization (WTO) which further strengthened and expanded the global trading system.