ECOWAS REVISED TREATY 2. These measures shall remain in force for a maximum period of one year. They may not be extended beyond that period except with the approval of the Council. 3. The Council shall examine the method of application of these measures while they remain in force. ARTICLE 50 TRADE PROMOTION 1. Member States agree to undertake, through their public and private sectors, trade promotion activities such as: a) promotion of the use of local materials, intermediate goods and inputs, as well as finished products originating within the Community; b) participation in the periodic national fairs organised within the region, sectoral trade fairs, regional trade fairs and other similar activities. 2. At regional level, the Community shall undertake trade promotion activities' which" may include: a) organisation, on a regular basis of an ECOWAS Trade Fair; b) harmonisationof the programmingof nationaltrade fairs and similar events; c) establishment of an intra-Community trade information network; d) study of supply and demand patterns in Member States and dissemination of the findings thereonwithinthe Community; e) promotion ofthediversification ofWest African markets, andthemarketing of Community products; f) promotion of better terms of trade for West African commodities and improvement of access to international markets for Community products; and g) participation, where appropriate, in international negotiations within the framework of GATT and UNCTAD and other trade-related negotiating fora. ARTICLE 51 MONEY, FINANCE AND PAYMENTS 1. In order to promote monetary and financial integration, and facilitate intraCommunity trade in goods and services and the realisation of the Community's objective of establishing a monetary union, Member States undertake to: 32