How do natural features such as rivers, lakes and mountains unite people or keep them isolated from each other?

The Nile river is important to the Ancient Egyptians because it kept them alive and developed their knowledge. They depended on it for food, water, transportation and much more. They even thought of it as a kind of god. It flooded once every year, creating fertile soil for growing crops.

The Nile river is important to the ancient Egyptians because it kept them alive and it gave the Egyptian water to drink. It is also grew the material made to make papyrus. Another way that the Nile River is useful is that it floods usually, this helps them because then it can fertilize the Egyptians crops. The Nile River provided rich farmland. It provided water for crops, a way of transportation, water to drink, water to bathe in, and many other useful things. It also gave them protection form the other side of the Nile.

The Nile was one of the main factors in the ancient Egyptians' lives, although it was not very safe for the people living next to the Nile. Once per year, the Nile would flood. When the Nile wouldn't flood enough the farmlands would become useless the crops would not grow and people wouldn't have food; and if the Nile would flood too much the water would scoop away a lot; for example some of the crops would get washed away and the people that lived near it would drown. Once these problems occurred, the people would meet up and try to think of decisions. One of the major decisions they made, was to make the calender, with the same amount of days as there are now, and in that calender were 3 seasons, to see when it would flood, and when their crops would grow. That is when that led to the worlds' first Nation-State.