The document provides a detailed overview of the history and functions of the World Trade Organization (WTO). It discusses how the WTO was established in 1995 to oversee international trade, replacing the General Agreement on Tariffs and Trade (GATT). It outlines the various trade negotiation rounds that have occurred under GATT and within the WTO. The key principles and functions of the WTO are also summarized, including administering trade agreements, providing a forum for negotiation and dispute resolution, and establishing rules for a liberal international trading system.