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<u><em>Argo</em></u>
<u><em>Argo, the system of television cameras and sonars that helped find the Titanic, was named by Titanic expedition leader Robert Ballard for the mythical Greek vessel that carried Jason on his quest for the Golden Fleece. In 1985, Argo represented a new generation of exploration vehicles for ocean scientists</em></u>
<u><em>Sonar uses sound to detect objects underwater. As well as using sonar, Ballard searched for the Titanic's trail of debris. He estimated that it would be over 2km long. Ballard had just 12 days to find it, in an area of ocean five times the size of New York</em></u>
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The technique use by the Zapotec to farm steep mountain terrain was through canal irrigation.
The Zapotecs make use of the water from small streams which caused them to be able to provide water to Monte Albán which was located 400 meters above the valley floor. Even after many years the Archeologist found the remains of minor irrigation system such as Dam and a canal on the south eastern parts of the mountain.
When voting for a president you need to think of what they do for your Country. As an example, will the President add good founding to your area, will the President make fair rights? You need to keep all those things in mind while voting.
