The answer is: shifting from an agrarian lifestyle to an urban lifestyle.
Answer:
The main reason was the revolt of his army. Fearing the prospect of facing other large armies and exhausted by years of campaigning, Alexander's army mutinied at the Hyphasis River (Beas), refusing to march farther east.
Explanation: Goooooooogle. Credit to gooooogle.
The answer is C, was unable to find the mouth of the mississippi river again to establish territory in louisiana
