What civilizations or empires were located in south america

The most famous of these civilizations is the Incan Empire. Emerging in 1438 C.E., the Incan Empire developed along the west coast of the continent, with the Pacific Ocean forming its western border, and the formidable Andes Mountains to the east, which provided a natural barrier from outsiders.

Explanation:

hey.

the answer is. b) to protect migrating native american tribes .

and, c) to protect migrating native american tribes .

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the two atomic bombs dropped on japan in 1945 killed and maimed hundreds of thousands of people, and their effects are still being felt today. the uranium bomb detonated over hiroshima on 6 august 1945 had an explosive yield equal to 15,000 tonnes of tnt.