For 10 points, name this ancient Indian empire ruled by Samudra and two Chandras.
One king of this empire disguised himself as his queen to infiltrate the court of the Western Satrap king. The progenitors of this empire set up matrimonial alliances with the Lichchhavi clan. The exploits of one ruler of this empire were recorded on the Allahabad Stone Pillar. The final line of this empire was ended after King Harsha avenged the death of his brother. One king of this empire performed an important horse sacrifice to commemorate his conquests, which gave him his regnal name as they bordered many oceans. This empire was visited by Xuanzang and Faxian prior to being conquered by the White Huns. It first established the Nalanda University and patronized such authors as Kalidasa. For 10 points, name this ancient Indian empire ruled by Samudra and two Chandras.
One king of this empire disguised himself as his queen to infiltrate the court of the Western Satrap king.
Gupta Empire [or Gupta Rājavaṃśa]