In the northern territories, a new empire arose when a ruler named Chandragupta I ascended the throne in 320 A.D.
Took over
Took over
Descended
Descended
Overthrew
Overthrew
Flew
Flew
To give you a step-by-step breakdown of the events mentioned:
1. Chandragupta I ascended the throne in 320 A.D.
2. He took over the northern territories to establish a new empire.
3. Chandragupta I ruled over the empire.
4. After his reign, he eventually descended from the throne.
5. Chandragupta I was overthrown by someone else.
6. It is not mentioned in the information provided whether he later flew or not.