The correct answer should be D. an urban unit with clear boundaries and a degree of autonomy
A has to be a town, even though the definitions of the two are almost the same. B is not it because a city can be an industrial center, not a cultural one. C is not it because natural geographic boundaries are not necessary.
At-ha English shah . Eyebrows she’s areas
The fertile river Valley between the Tigris and Eufrades rivers if that what you mean.
Answer:
Greco-Persian Wars | Definition, Summary, Facts, Effects ...www.britannica.com › event › Greco-Persian-Wars
Greco-Persian Wars, a series of wars fought by Greek states and Persia from 492 to 449 BCE. Although the Persian empire was at the peak of its strength, the collective ... even succeeded in liberating Greek city-states on the fringe of Persia itself.
Nixon is the answer
hope this helped