Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Monastery and Site of the Escurial, Madrid' has mentioned 'Empire' in the following places:
Occurrence Sentence Text Source
The king assigned specific ambassadors charged with traveling through his Empire and neighboring kingdoms searching and buying the best acquisitions for El Escorial's library.
In addition to continuing the search for and purchase of especially valuable and old books, he promulgated a new decree according to which the library of El Escorial ought to receive a copy of every book published inside the Empire.