3500BC to about 300BC. The Sumerian civilization was the first to inhabit the land from 3500BC-2000BC. The next major society was the Babylonian population from 18th century to 619BC followed by the Assyrians from 1350-612BC (1). It was not until around 3500BC that civilization in Mesopotamia began to grow. City-states were formed in southern Mesopotamia as a culture we call Sumer.
             The land surrounding Mesopotamia was not populated with mountainous terrain and therefore made it vulnerable to attack form-neighboring populations. It was not uncommon for warlords to overthrow existing rulers only to be overthrown themselves later on. There were few dynasties that lasted more than a few hundred years. Building cities became an essential part of fortifying people against attack and this idea spread quickly across the region. The city of Babylon was one of the best-fortified cities of that time. In fact the bible speaks about the walls of Babylon and it's great defenses. A city of this size required a great deal of water and sewage. The control of water would become difficult. Along with this new idea of city-states c
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