Which factors in the Gupta empire most helped the growth of learning?

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Explanation:

The factors that the Gupta empire most helped the growth of learning was peace and stability

in 342 bc j._c. egypt fell into the hands of the persians, under the reign of nectanebo ii

greek city-states unite in a revolt against the persian empire at the beginning of the fifth century bc. j.-c  

from the year 660 or 659 bc ad, cyrus preached the revolt against the medes to deliver the persians.