Plant macrofossils from the sites of Khao Sam Kaeo and Phu Khao Thong on the
Thai-Malay Peninsula show evidence of cross-cultural interactions,
particularly between India to the west and Southeast Asia to the east.
Archaeobotanical analysis of various cereals, beans and other crops from
these assemblages sheds light on the spread and adoption of these species
for local agriculture. There is also early evidence for the trade of key
commodities such as cotton. The plant remains illustrate a variety of
influences and networks of contact across South and Southeast Asia during
the late first millennium BC.