How might the geography of Egypt have helped the Egyptians build pyramids?

The geography of Ancient Egypt was very unique and allowed Egypt to become a very successful civilization. Egypt's geography contributed all aspects of Ancient Egyptians lives such as the Nile River being their source of food, water, and transportation and the desert offering natural protection.“Using a sled which carried a stone block and was attached with ropes to these wooden posts, ancient Egyptians were able to pull up the alabaster blocks out of the quarry on very steep slopes of 20 percent or more.”The geography of ancient Egypt helped agriculture develop because agriculture depended on the location of natural features. ... The Egyptians were protected by their physical environment because to the east and west, there were deserts which prevented invaders from coming, and to the north there is the Mediterranean Sea.

tearing down the berlin wall.