Which factor most contributed to the expansion of the Incan Empire?

trade

Explanation:

extensive roads that contributed to trade

I do not know

Explanation:

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explanation:

these are the geographical features of the gupta empire.

1)it inherited the land owned by the mauryan empire.

2)one obvious difference between the two empires is that the gupta empire was smaller that the mauryan.

3)the gupta empire is located in the northern region of the subcontinent underneath the himalayan and hindu kush mountains.

the gupta empire, marked by extensive inventions and discoveries that contributed to hindu culture, in subjects such as science, technology, engineering, art, dialectic, literature, logic, mathematics, astronomy, religion, and philosophy.

this period was also known as the golden age of india

the answer is c my brotha. c.   formed an alliance with the soviet union.