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.
In a Presidential Government, many executive, financial and legal powers are concentrated in the hands of the President and he can use his discretion in many matters.In a Presidential Government, there is sometimes non-co-operation between the Executive and the Legislature and a great difficulty is faced by the President in obtaining the approval for the foreign aid programme .Another drawback of the Presidential government is that the people or the Parliament have no control over the daily ...