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Pre-Columbian civilizations<span>, </span><span>the aboriginal </span>American Indian cultures<span> that evolved in Mesoamerica (part of Mexico and Central America) and the Andean region (western South America) prior to Spanish exploration and conquest in the 16th century. The pre-Columbian civilizations were extraordinary developments in human society and </span>culture<span>, ranking with the early civilizations of </span>Egypt<span>, </span>Mesopotamia<span>, and </span>China<span>.
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I would say A only because it says the societies meaning the people, not the actual area like what kind of new people settled there after the slaves were taken. Second, C doesn't make sense because the only technology that came to be was in the North and that was when slavery was being taken care of. Lastly, D is correct but, slaves were still brought to the U.S. and if it devastated the population, there would be little to no slaves.