Final answer:
Three contributions of ancient Egypt: wheat and barley, 365-day calendar, and pyramids and burial tombs
Step-by-step explanation:
Three contributions of ancient Egypt are wheat and barley, 365-day calendar, and pyramids and burial tombs. Wheat and barley were staple crops that provided sustenance for the Egyptian population. The 365-day calendar developed by the ancient Egyptians was one of the earliest known calendars and influenced later calendar systems. Pyramids and burial tombs were iconic structures in ancient Egypt and played a significant role in their religious beliefs and afterlife rituals.
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