How did cataracts in the nile river make transportation difficult?

Cataracts’ shallow depth and rushing water made the river impassable.

Explanation:

This is the main reason why it was difficult for the Egyptians to travel on the river Nile. The Nile had six main cataracts. These contained rushing water and were often of very shallow depth. The conditions complicated the journeys. Nevertheless, the Nile was an important highway of communication and trade in Ancient Egypt, which allowed the civilization to become extremely advanced.

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