The statement which is given above is true.
Step-by-step explanation:
The Spanish killed all Mayan priests and burning their books which leaves very less information on the Mayan civilization. The Spanish forced the Mayans to convert to Christianity and burnt their books so that they could not know much about their religion and culture.
The Mayans resisted their conversion but were not able to restrain much. The Mayans had little knowledge of their religious beliefs and were not able to know much about their civilization as well.