The correct answer to this open question is the following.
Although the question is incomplete because you did not attach references to the lesson, we can say the following.
One Mesopotamian contribution that I think had the biggest impact on human history was the development of agriculture techniques and the knowledge to know about the flooding of the Tigris and Euphrates Rivers, so Sumerians could use it for growing crops and to avoid some catastrophes.
The Sumerians were the oldest civilization on planet Earth. They settled in the middle of the above-mentioned Rivers in the Middle East region, modern-day Iraq. They developed great knowledge to built impressive buildings called Ziggurats and formed important city-states such as Uruk, Kish, Ur, and Lagash. Agriculture techniques were a big reason they could settle in these regions.
1.C
2.D
3.B
I'm in the eighth grade, so no biggie. Let me know if you need any more help.
A. technological advances
The judicial branch checks the powers of the executive branch by overseeing the laws and checking the executive branches actions this way. The judicial branch is appointed by the executive branch for life and is therefore no longer under the control of the executive branch after appointment. The courts can then check the actions of the executive branch through judicial review to determine if their actions are constitutional or not. Therefore, the judicial branch has the ability to check the executive by upholding the American Constitution.