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an Ancient sumeria . one of the first known maps was made on a clay tablet .
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The USGS created its first map the same year it was founded by congress
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The Plane-Table Surveying remained the main method of mapping until this point . (:
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Invention Of Radar , prepares to take pictures on a plane .. intead of climbing up a mountain . (:
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NASA launched another satellite, the earth obseving system . (EOS) .