Final answer:
The trading societies of Southeast Asia included Malaysia, Singapore, Brunei, East Timor, Indonesia, and the Philippines.
Step-by-step explanation:
The trading societies of Southeast Asia included various states such as Malaysia, Singapore, Brunei, East Timor, Indonesia, and the Philippines. These countries formed important hubs for trade and commerce, connecting the region with the wider world. The trading networks in Southeast Asia played a crucial role in the development of larger states and powerful kingdoms.