 The group achieved greater cohesion in the mid-1970s following a change in the balance of power after the end of the Vietnam War in 1975.The region's dynamic economic growth during the 1970s strengthened the organization, enabling ASEAN to adopt a unified response to Vietnam's invasion of Cambodia in 1979.ASEAN's first summit meeting, held in Bali, Indonesia in 1976, resulted in an agreement on several industrial projects and the signing of a Treaty of Amity and Cooperation, and a Declaration of Concord.