Exploration (people being able to explore unknown continents and countries) was aided by astronomy (the stars showed direction) and the development of what instrument? Is it the compass?

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asked by Rose
  1. Since the compass is magnetic and has nothing to do with astronomy, I think the instrument you want is explained here:


  2. http://en.wikipedia.org/wiki/Sextant

    (Compasses have to do with Earth's magnetic fields: http://en.wikipedia.org/wiki/Compass )

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