However, the Indian government believes that the plan has become widespread since the creation of the World Trade Organization (WTO) in 1994. With the recent proliferation of bilateral PTAs and the emergence of mega-TAPs (broad regional trade agreements such as the Transatlantic Trade and Investment Partnership (TTIP) or the Trans-Pacific Partnership (TPP), a global trading system managed exclusively within the framework of the WTO seems unrealistic and interactions between trading systems must be taken into account. The increasing complexity of the international trading system resulting from the proliferation of PTAs should be taken into account when considering the choice of forums used by countries or regions to promote their trade relations and environmental agenda.  TPAs have grown rapidly; In the 1990s, there were just over 100 PTAs. In 2014, there were more than 700. A common market is a customs union in which the movement of factors of production between Member States is relatively free. Trans-Pacific Partnership (TPP), signed by Member States but not yet ratified, and the Transatlantic Trade and Investment Partnership (TTIP) under negotiation. . . .