Final answer:
The Asia-Pacific Economic Cooperation (APEC) is the primary forum for promoting trade liberalization and economic cooperation among major economies around the Pacific Rim.
Step-by-step explanation:
The unique forum that has evolved into the primary regional vehicle for promoting trade liberalization and economic cooperation, including all major economies around the Pacific Rim, from Russia to Chile to Australia, is the Asia-Pacific Economic Cooperation (APEC).
Established in 1989, APEC is a regional economic forum aimed at leveraging the growing interdependence of the Asia-Pacific. APEC's members seek to create greater prosperity for the people of the region by promoting balanced, inclusive, sustainable, innovative, and secure growth and by accelerating regional economic integration.