5. The Ancient Inca built aquaducts, cities, temples, fortresses, tunnels, suspension bridges, and 2, 250 miles of roads. The Inca had a great understanding of mathematics and agriculture. They also knew about hydraulics, astronomy, architecture and military strategy.
6. The Inca had skills in music, textiles, wood and stone carving, art and poetry. The Inca were also highly skilled in working with all types of metals. Their pottery was simple, practical and beautiful. The Ancient Inca grew corn, potatoes, coffee, and other grains. They also created woven baskets and woodwind instruments.
7. The Inca pyramids were built with mud bricks of clay that were mixed with dry straw from the corn plant. When the Incas found a pyramid that had been built by another culture, they would build their own Inca temple on top of it. Inca gold was not inherited by a person's decendents, so when somebody died, the gold was placed inside the grave.