What was the Inca science contributions?

The Inca civilization made significant contributions to science, particularly in agriculture, engineering, and astronomy. They developed advanced agricultural techniques, such as terracing and irrigation, which maximized crop yields in their mountainous terrain. In engineering, the Incas are renowned for their sophisticated road systems and impressive stone structures, like Machu Picchu, demonstrating their understanding of geology and architecture. Additionally, their observations of celestial bodies led to a detailed calendar system, which was crucial for agriculture and religious ceremonies.