What empire controlled the andes mountains and the pacific coast of south america at the time of columbus discovery?

The ancient empire that controlled the Andes Mountains and the pacific coast of South America during the time of Columbus discovery is the Incas. They control their empire through cooperation and subordination. They used various methods to incorporate South Africa and centered on the Andean mountains. That happened in 1438 AD prior to Christopher Columbus discovery of America in 1492. 

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explanation:

cuba is a multi-ethnic nation