Kushan invasions
Saka invasions
Huna invasions
All the above
Chandra Gupta II
Skanda Gupta
Samudra Gupta
Kumara Gupta I
Dandin
Vishakadatta
Bharavi
Kamandaka
Varahamihira
Aryabhatta
Gunadya
Brahmagupta
Kalidas