How did the cataracts of the Nile provide defense for Egypt?

People Trying to invade Egypt would have to first cross the Nile, which was very wide in places so very hard to cross. The Egyptians could stand on their own side of the Nile and throw spears at their attackers.

Explanation:

to unite muslims and hindus in resistance against british colonialism.

travels along an axon. this triggers a wave of electrical activity that passes from the cell body along the length of the axon to the synapse