USA HISTORY

Detailed explanation-1: -These were the people who built Machu Picchu, a royal estate perched in the clouds, and an extensive network of paved roads complete with suspension bridges crafted from woven grass. But the paradox of the Incas is that despite all this sophistication they never learned to write.

Detailed explanation-2: -The Inca Empire (1438–1533) had its own spoken language, Quechua, which is still spoken by about a third of the Peruvian population. It is believed that the only “written” language of the Inca empire is a system of different knots tied in ropes attached to a longer cord. This system is called quipu or khipu.

Detailed explanation-3: -The Inca, a technologically sophisticated culture that assembled the largest empire in the Western Hemisphere, have long been considered the only major Bronze Age civilization that failed to develop a system of writing-a puzzling shortcoming that nowadays is called the “Inca Paradox.”