Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Temple of Preah Vihear' has mentioned 'Empire' in the following places:
Occurrence Sentence Text Source
As a key edifice of the empire's spiritual life, it was supported and modified by successive kings and so bears elements of several architectural styles.
The earliest surviving parts of the temple, however, date from the Koh Ker period in the early 10th century, when the empire's capital was at the city of that name.