The statement that the pharaohs had a canal built connecting the Nile to the Red Sea, opening up trade routes to Arabia is true. (Option A)
Pharaohs had a canal built, the Suez Canal which connected the Nile to the Red Sea, which in turn opening up trade routes to Arabia. It has been concluded by historians that the Egyptian Pharaoh Senausert III of the Twelfth Dynasty conceived the idea of connecting the Red Sea and the Mediterranean via Nile and its branches. The canal was built by pharaohs to promote trade and facilitate communication between the East and the West. Today, remnants of that canal can be found in Geneva, a place near the city of Suez.
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