Mafanikio ya mapema katika Ufilipino, Borneo, Malaya, Singapore, na Hindi Mashariki ya Uholanzi yaliwezesha Japani kuanzisha kile kinachoitwa Greater East Asia Co-Prosperity Sphere.
Mafanikio ya mapema huko Borneo yaliwezesha Japani kuanzisha kile kinachoitwa Greater East Asia Co-Prosperity Sphere.