Within a period not exceeding two (2) years, co-ordination and harmonisation of tariff and non-tariff systems among the various regional economic communities with a view to establishing a Customs Union at the continental level by means of adopting a common external tariff. (e) Fifth Stage: Within a period not exceeding four (4) years, establishment of an African Common Market through: (f) (i) The adoption of a common policy in several areas such as agriculture, transport and communications, industry, energy and scientific research; (ii) The harmonisation of monetary, financial and fiscal policies; (iii) The application of the principle of free movement of persons as well as the provisions herein regarding the rights of residence and establishment; and (iv) Constituting the proper resources of the Community as provided for in paragraph 2 of Article 82 of this Treaty. Sixth Stage: Within a period not exceeding five (5) years: (i) Consolidation and strengthening of the structure of the African Common Market, through including the free movement of people, goods, capital and services, as well as, the provisions herein regarding the rights of residence and establishment; (ii) Integration of all the sectors namely economic, political, social and cultural; establishment of a single domestic market and a Pan-African Economic and Monetary Union; (iii) Implementation of the final stage for the setting up of an African Monetary Union, the establishment of a single African Central Bank and the creation of a single African Currency; (iv) Implementation of the final stage for the setting up of the structure of the Pan-African Parliament and election of its members by continental universal suffrage; (v) Implementation of the final stage for the harmonisation and co-ordination process of the activities of regional economic communities; (vi) Implementation of the final stage for the setting up of the structures of African multi-national enterprises in all sectors; and (vii) Implementation of the final stage for the setting up of the structures of the executive organs of the Community. 11