The statement that the peace and prosperity of countries lay in establishment and strengthening of the regional economic organisation is true. The statement is true because-

• By forming regional economic organisation the nations become integrated and unify in an economic, political, cultural, social and military sense and therefore turn out to be much stronger and prosperous.

• The nations develop cohesiveness over their shared culture, a geographical proximity which results in persistent peace within the region. For example- ASEAN.

• Because the nations unite together to form a common economic platform, their economy grows better and bigger and at par with the other large economies of the world and the region prospers. For example- the European Union.