To answer why the countries need to form regional economic integration and cooperation, it might be easy using the real case study, and the one mentioned in this paper is the Asia-Pacific Economic Cooperation, or what we call APEC. As established since the year 1819, APEC is the old and large cooperation enough to study whether the concept is worked or not. Consequently, while some integrations and cooperation are broken apart, it should be taken into awareness if the idea following the world trade system does lead to gains or losses, and what will be the future of them?
Information in this paper, including face sheet, is mainly provided by the forum’s studies itself with the addition of the last section which forecasts the future of this economic cooperation using basic economic theories. However, it is important to inform that, in practical, economies might act differently from the theories themselves.