The Andes form the backbone of South America. Irradiating from Cuzco--the symbolic "navel" of the indigenous world--the mountain range was home to an extraordinary theocratic empire and civilization, the Incas, who built stone temples, roads, palaces, and forts. The clash between Atahualpa, the last Inca, and the illiterate conquistador Pizarro, between indigenous identity and European mercantile values, has forged Andean culture and history for the...