that’s interesting, but the Malays should learn what the word prehistoric means.
There are Indian families who have a nearly as lengthy history, and yet others who were already there when these buildings were new (but, alas, they left no "history").
The straits in this area were very important in the development of waterborne worldtrade and tied Chinese civilization to Indian civilization, and later to European civilization.
It means “before history”, so any illiterate society is prehistoric. :’)