Which of the following five countries signed the Bangkok Declaration leading to the formation of ASEAN?

Indonesia, Malaysia, Philippines, Singapore and Thailand

The correct answer is Option (2) → Indonesia, Malaysia, Philippines, Singapore and Thailand

ASEAN was established in 1967 by five countries of this region — Indonesia, Malaysia, the Philippines, Singapore and Thailand — by signing the Bangkok Declaration. The objectives of ASEAN were primarily to accelerate economic growth and through that ‘social progress and cultural development’. A secondary objective was to promote regional peace and stability based on the rule of law and the principles of the United Nations Charter.