Answer:
The Correct Answer is 'Hunas'
Step-by-step explanation:
- The Gupta Empire suffered aggression by the Huns, or white Hunas, on various occasions.
- The Gupta Empire faced various numbers of Invasion by the Nomadic people which are all related Hunas.
- The empire was exhausted and ultimately fell after the death of its last ruler, Vishnugupta.
- They invented the decimal system, with zero as a placeholder.