The best and most correct answer among the choices provided by the question is the fourth choice "river valleys"
The first great civilizations all grew up in river valleys. The oldest, 3300 to 2500 BCE, was along the Tigris<span> and </span>Euphrates<span> rivers in the Middle East; the name given to that civilization, </span>Mesopotamia<span>, means "land between the rivers".</span>
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The answer would be B.The establishment of a national bank
It lowered the age to vote from 21 to 18 in 1971
Answer:
Byzantine empire
Explanation:
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