The Sumerians were the first people to migrate to Mesopotamia, they created a great civilization. Beginning around 5,500 years ago, the Sumerians built cities along the rivers in Lower Mesopotamia, specialized, cooperated, and made many advances in technology. The wheel, plow, and writing (a system which we call cuneiform) are examples of their achievements.
1 In a Parliamentary System, the head of state is usually a different person than the head of government (not in every country). 2  The HOG is often vested with more official power, but holds that position for a relatively short time.
Compared with a typical parliamentary system: 1  The legislature in a presidential system is in a better position to oversee the actions of the president and executive agencies. 2  A parliamentary system with a majority government should be able to put their program into law; a president facing an opposition legislature is a recipe for deadlock.