Answer: The correct answer is : Use of water resources such as: irrigation systems, dams, canals, underground wells and aqueducts. The use of medication such as: antiseptics and various medications. The types of dienes in decorative art such as: geometric, floral design, patterns and various shapes. Achievements in medicine such as: the establishment of hospitals with separate rooms and teaching centers, anyone can receive treatment, surgeries, the use of needle, thread and stitches after surgery. Contributions in mathematics, algebra, geography and navigation. They made the division of the regions by climatic zones, created very precise maps with commercial routes.
