It was the Indian Culture.
After Khmer Empire fell, kingdom of Sukhothai(Thailand), and Kingdom of Laos rose.
India
The Khmer were a Hindu people, and when Buddhism grew in popularity, Hinduism lost some of its followers, and the Khmer Kingdom collapsed. Hope this helped! :)
khmer kingdom
rice
It was the Indian Culture.
Khmer Empire, present day Cambodia.
Khmer culture was significantly influenced by both China and India through trade, religion, and political relationships. Indian culture introduced Hinduism and Buddhism, which shaped Khmer art, architecture, and social systems, evident in monumental structures like Angkor Wat. Additionally, Indian and Chinese trade routes facilitated the exchange of ideas, language, and customs, further integrating aspects of these cultures into Khmer society. This blend created a unique cultural identity that synthesized elements from both neighboring civilizations.
Cambodia, Thailand, Malaysia, Laos
They were influenced by Indian culture.
Afghanistan
I am not sure if the answer is correct. I think the answer is ( As Buddhism grew in influence, the number of Hindu followers declined, and the Khmer lost power. )