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.
Answer:
Doppler Effect
Explanation:
Doppler Effect is a term in Physics that describes the phenomenon experienced when there is change in wave frequency during the relative motion between a wave source and its observer.
In other words, it is referred to as increase or decrease in the level of sound, or other waves as the distance between source and observer is closer or farther from each other, such that it causes change in pitch, which is noticeable by the observer.
For example, when a sound object moves towards an individual or observer, the frequency of the sound waves increases, leading to a higher pitch, and at the same time, when the sound object moves away from an individual or observer, the frequency of the sound waves decreases, leading to a lower pitch. E.g passing siren from ambulance.
Hence, in this case, the right answer is DOPPLER EFFECT
Ethnocentrism- evaluation of other cultures according to preconceptions originating in the standards and customs of ones own culture.
A sales tax is a tax on goods and purchases.
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Answer: it is called crystallized intelligence</h3>
Explanation:
<h3>Crystallized intelligence is the ability to use knowledge, skills and experience. It does not equate to memory, but it is based on accessing data from long-term memory. Crystallized intelligence is one's lifetime of intellectual attainment, as shown mostly through one's vocabulary and general knowledge. .
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