Cooperation in the South Pacific region is unique due to the characteristics of its participants. Following the period of decolonization (1962-1980), countries in Oceania have radically changed. Achieving independence gave those nations international legal personality, yet complete independence from their former colonial powers. The following consequence was gaining an opportunity to draft, adopt and execute own laws in national and foreign policy. PICT (Pacific island countries and territories) have been expanding connections, political and trade ones, within the region since the 1960s when permanent migration of islanders and intra-regional transactions began. Migrations along with foreign aid are considered as the distinctive characteristics of the Pacific Ocean basin. Since the 1980s, the regional integration in Oceania, through establishing regional groupings and increasing the regional trade agreements number, took on pace and scope. The MIRAB synthetic measure (migration, remittances, aid, bureaucracy) has been used in analyzing the Oceania developing microeconomies. Last but not least, migration and foreign aid have been retaining the region from a deeper and more effective stage of regionalism.