The Association of Southeast Asian Nations (ASEAN) is a geo-political and economic organization of ten countries located in Southeast Asia, which was formed on 8 August 1967 by Indonesia, Malaysia, the Philippines, Singapore and Thailand. Since then, membership has expanded to include Brunei, Burma (Myanmar), Cambodia, Laos, and Vietnam.
Its aims include accelerating economic growth, social progress, cultural development among its members, protection of regional peace and stability, and opportunities for member countries to discuss differences peacefully. (source)
Thank you Erica!