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 presidential system, the legislature and the executive do not have to be aligned and often work against each other. 2  Policy implementation can be much slower and more moderated, at least in the US system.
Best Answer: a parliamentary government a system of government wherein the ministers of the executive branch are drawn from the legislature, and are accountable to that body, such that the executive and legislative branches are intertwined.he prime minister is elected to the parliament and is selected by the majority party, or a coalition of parties if there is no majority. In a parliamentary government, the legislative and executive branches are both controlled by the majority party.