Hipparchus developed our present grid system of longitude and latitude.

Question

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Although Eratosthenes developed the concept of longitude and latitude, Hipparchus turned this idea into a grid system which divided the Earth's surface into 360°. Ptolemy advanced this by dividing the degrees into minutes and seconds to assist navigators. Information can be found in the section Understanding the Ocean Began with Voyaging for Trade and Exploration.

Hipparchus Developed Our Present Grid System of Longitude and Latitude