Describe the OAS and its role and activities in maintaining unity among the American states.

Comment:
1. The OAS and its role and activities in maintaining unity among the American states.
2. ASEAN and its Role for economic cooperation and Integration in South-East Asia.
3. South Asian Association for Regional Cooperation (SAARC) and its role in promoting economic cooperation in South Asia.
4. Eurasian Economic Union (Russia, Kazakhstan and Belarus); its prospects.