What defenses did egypt’s geography provide the ancient egyptians?

The river and deserts provided natural defenses for the Egyptians. The Nile River has a marshy delta. As a result, Egyptians could not build a port at the mouth of the Nile. This made it difficult for invaders to reach Egyptian settlements along the river.

so they can defeat there oppenent

i believe it is the second one.   if correct plz mark brainliest.