Answer and Explanation:
The proximity to the Nile River is the first reason why the geography of Egypt has limited the influence of other civilizations. This is because the Nile River allowed a strong independence from Egypt, since the region had a strong fertility of the soil and water for irrigation of crops. This made Egypt have a very strong agriculture, making it independent from other nations and making these nations dependent on Egypt.
Another important point is the access to commercial routes that the location of Egypt provided. This increased the influence of Egypt, but it decreased that they were influenced by nations that were in the way of these routes.