Which early Egyptian innovation provided non-human, non-current-dependent water propulsion?
Answer
harnessing wind energy through sails
The harnessing of wind energy through sails, observed around 3000 B.C.E. by Egyptians, provided the first means of propulsion for water travel that did not rely on human muscle power or the natural flow of water currents. While earlier efforts included rafts and dugout canoes, sails introduced the concept of utilizing an external, renewable, non-human energy source to drive movement across water bodies.
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