I think they were the Hyksos.
The desert helped Egypt by giving them protection from invaders. :) :0
It provided protection from foreign invaders.
cataracts and the Sahara desert
The sand dunes act as a natural barrier, blocking strong winds.
It protected Egypt from invaders. A negative effect is that it limited communication.
Other than the climate, Egypt was hard to invade due to geographical features. To the North was the Mediterranean Sea, while the South had many cataracks that prevented invaders from entering from the Nile northbound. To the East or West, I'd assume the Eastern and Western Deserts would greatly protect Egypt because of their harsh conditions.
The deserts acted as a natural protection from invaders.
It protected them from intruders and invaders.
The Sahara Desert on both sides of Egypt served as a natural barrier to invaders from outside and expansion from inside outward.
Egypt has some major natural features that made it able to survive. This is because of the desert which provided protection from invaders along with the Nile river that gave them fertile soil.
The Sahara Desert on both sides of Egypt served as a natural barrier to invaders from outside and expansion from inside outward.
The Sahara Desert on both sides of Egypt served as a natural barrier to invaders from outside and expansion from inside outward.