Increasing trade across nations of the world has been one of the dominant features of post-war economic development. In the last 40 years, the share of world trade in total world GDP has more than doubled, increasing from a quarter of GDP in 1960 to nearly 52 per cent in 1999 (World Bank, 2001). In the agricultural sector, food exports have also increased faster than food output. This increase in volume as well as in value terms has greatly been facilitated by the establishment of the General Agreement on Tariffs and Trade (GATT) in the late 1940s, whose aims have been continued by the WTO (World Trade Organization). The way in which the GATT/WTO has enabled a greater economic integration of countries through trade will be examined in Chapter 8.