Answer:
Mesopotamia
Explanation:
Mesopotamia is thought to be one of the places where early civilization developed. It is a historic region of West Asia within the Tigris-Euphrates river system.
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Let us choose Extra study. Knowing that opportunity cost is related to the opportunities lost by choosing one specific course of events than others. By choosing an extra study and spend hours studying something, my opportunity cost will be the school sports practice hours that could be spent in this time. Another opportunity cost would be the social interaction, in a club, for example, lost because of the extra study decision.
