What are some achievements of the Inca civilization?

They used the quipu as a record keeping device to track debts, production or any numerical information. The earliest quipu was found in the City of Caral, it dates approximately to 2600 BC. It confirms the hypothesis that the Incas inherited many aspects of their culture from earlier civilizations they conquered. read more

Inca Pachacuti built it and Manco Inca refortified it after the conquistadors had invaded Cusco, Ollantaytambo served as a temporary capital of the Inca Empire. The most magnificent community the Incas built is the citadel of Machu Picchu built between the mountains of Machu Picchu and Huayna Picchu. read more

Some of the major accomplishments of the Incas included their inventions, such as the flute, drum and Inca calendar. Culturally, Incas were also adept in creating pottery and cloth, and politically they are known for integrating imperial policies with ethnic diversity, which was way ahead of its time. read more