Many argue that only
writing could really date the culture and prove Indianization.
Citing Chinese scholar- Chu Tsi's book"East and West",
he talked about Indianization of China in terms of cultural borrowings.
A large number of writers opted for a synthesis between Indianization and westernization, in their search for a national ideology.
The lives of rulers, daily lives of people,
rituals of funeral, weddings and specific customs were a few that helped anthropologists date the Indianization of countries.
However, the conclusion that Indianization was just spread through trade is insufficient,
as Indianization permeated through all classes of Southeast Asian society, not just the merchant classes.
Based on the evidence of the caste system in Southeast Asia, shows that
they were applying Indian culture to their own, also known/seen as Indianization[61] Similar to the caste systems,
the cultures were a huge part of determining the legitimacy of Indianization.