Exploration & Discovery USA

 1st-Flight North Pole  1st-Flight South Pole  1st-Lunar Orbit  1st-Man on Moon  1st-Moon Landing
 1st-Orbit of the Earth  1st-Telegraph Cable  Birth of Aldrin, Buzz  Classification-Galaxies  Discovery of Carborundum
 Discovery of Cephids  Discovery of Electrons  Discovery of Manhattan Island  Discovery of Moon  Discovery of North Pole
 Discovery of South Pass  Discovery of Spectrum  Discovery of X-Rays  Exploration-New England  Massachusetts Bay
 Newark  Nobel Prize  Nuclear  President-National Academy of Sciences  Publication of Giddings
 Rule of Falklands, The  Rule of Falklands, The  Sale-Manhattan Island  Siege of Port Louis  Yale


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