Answer:
D) were still thriving when the Spanish arrived.
Explanation:
Both the Maya and Olmec civilization had disappeared centuries before the Spanish arrived.
The Aztec and Inca Empires, on the other hand, were still thriving. The Aztec empire in Central Mexico, and the Inca Empire in South America, along the Andes Cordillera.
The Aztec Empire was conquered by Hernan Cortes, while the Inca Empire was conquered by Francisco Pizarro.
