There are wonderful maps at Wikipedia and this is one of them.
The map approximates the situation in Asia at the turn of the 13th century. That is roughly 500 years after Jayavarman II declared Khmer’s independence from Srivijaya, about 300 years after the devastating raids by the Cholas on Srivijaya and less than a century before Majapahit sealed the end of one of the greatest maritime empires in Southeast Asia.
