Correct Answer - Option 1 : Huna invasions
The correct answer is Huna invasions.
- The main reason for the decline of the Gupta empire was the Huna invasions.
- From the time of Kumargupta I the Gupta Empire was threatened by the Hunas, a central Asian tribe.
- However, their attacks were repulsed during that period by Skandagupta.
- But in the late 5th century, Huna chief Tormana established his authority over large parts of western and Central India.
- Therefore, leading to the decline of the Gupta Empire in northern and western regions of the empire.
Thus, we can say that Huna invasions were the main cause of the decline of the Gupta Empire.