It is called THE SUEZ CANAL. ships pass through it to get from the Mediterranean sea to the Red Sea during their passage, its Mediterranean port being Port Said and its Red sea port - Port Suez.
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The Suez Canal
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The Atlantic Ocean is the busiest sea passage in the world.
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Egypt controls passage through the Suez Canal, but is required
to maintain open access in both peacetime and wartime pursuant to
the Constantinople Convention.