Answer:
D. controlling such a large area
Explanation:
The area that's controlled by the Mesopotamian empires covered western Asia and Northern part of Africa. In 4000 BCE This was among the largest empires in the world .
Since there was no effective method of long distance communication during that time, managing this very large are was extremely difficult. In the end, many part of their regions were left unmanaged and fall to the attacks from other smaller empires or groups of barbarians.
The answer is B. Incentive is the term being described
People gather during sports fest or any activities that relate to sports. These are the opportunities that different people from different places are able to showcase their physical abilities and strengths. How this effectively build the nation and promote diversity is that, it encourages unity. Unity in a way any people in different places come together to witness such event. This is a great chance for promotions and awareness events.