<span>The founders gave veto power to the office of the president to allow the executive branch to stop unfair laws at the last minute.</span>
The Tigris and Euphrates rivers in Mesopotamia were erratic. The rivers would flood or drought unpredictably and even shift their courses. Also, the Tigris had high banks which meant water irrigated from it would have to be drawn upward from the banks.
The Nile on the other hand followed a consistent annual inundation that brought water and fertile silt deposits right onto the crop fields. Egyptian farmers simply had to wait for the flood to recede some and plant their crops; the water and nutrient soil was already provided by the River.
To limit the amount of power. Parties are composed of people, usually people who consider their party to be the best. However with too much power in one party causes anarchy and chaos therefore allowing more segues for corruption and abuse of systems. Therefore when the system of power is abused or overused it takes funds that some governments don't have to fix the issues created.
There are 435 seats but anyways the answer is (D) one third