Modern-day archaeological findings provide evidence of a commercial society centered on the Mekong Delta that flourished from the 1st century to the 6th century.
Among these findings are excavations of a port city from the 1st century, located in the region of Oc-Eo in what is now southern Vietnam.
No one knows for certain how long people have lived in what is now Cambodia, as studies of its prehistory are undeveloped.
A carbon-l4 dating from a cave in northwestern Cambodia suggests that people using stone tools lived in the cave as early as 4000 bc, and rice has been grown on Cambodian soil since well before the 1st century ad.
Most of the monarchs, however, seem to have been more concerned with displaying and increasing their power than with the welfare of their subjects.
Historians have dated more than a thousand temple sites and over a thousand stone inscriptions (most of them on temple walls) to this era.