Astronomy and the Inca Celestial Knowledge for Calendars and Festivals

The Incas performed trepanations using bifacial, obsidian tools to create incisions in patients' skulls. ... In later years, bronze and copper tools were used for ... Board on Science and Technology for International Development. Author. Lost ... This book has been the starting ground for many a graduate students' research. Kids learn about the government of the Inca Empire including officials, organization, Sapa Inca, taxes, law and punishment. Rich in foodstuffs, textiles, gold, and coca, the Inca were masters of city building but nevertheless had no money. In fact, they had no marketplaces at all. The Incas were pioneers in agricultural technology, developing innovative techniques such as terracing, irrigation systems, and crop rotation. The advances demonstrated in Aztec technology are so remarkable that they are still looked upon adoringly to this day. Just a few of the Aztec accomplishments ... Among the many applied techniques, the impressive hydraulic engineering works stand out, including aqueducts, fountains, drainage and expansive ... An example is the practice of acupuncture. • In terms of technology, the Chinese are known to develop many tools. Among the famous discoveries ... The Incas built a vast empire without the wheel, powerful draft animals, iron working, currency or a writing system. The Incas had no iron or steel, so their armor and weaponry consisted of helmets, spears, and battle-axes made of copper, bronze, and wood.