The document discusses GATT (General Agreement on Tariffs and Trade), the WTO (World Trade Organization), and regional trading blocs. It provides background on GATT, including its founding in 1947 with 23 members and purpose of reducing tariffs. It then discusses the establishment of the WTO in 1995 to replace GATT and regulate international trade. Finally, it examines some major regional trading blocs like the European Union, NAFTA, ASEAN, SAARC, and SAFTA, providing brief overviews of their history, members, and objectives in promoting regional economic integration and trade.