Answer:trading with outside partners to bring in surplus food.
building projects ensured their power would not be challenged.
the building of a postal system to increase the economy.
irrigation systems made trade possible because of surplus crops.
Explanation:
Answer:
A. no excessive supply or demand
Explanation:
hope this helps. . . <3
Because it was harder to travel over moountains.
Answer:
False
Explanation:
Its actual population is 3.25 million.
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