On this day in 1947, the sound barrier was officially broken by an aircraft for the first time in history ...
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1947: The Sound Barrier Officially Broken for the First Time in History
1947: The Sound Barrier Officially Broken for the First Time in History
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1644: William Penn: The Man who Owned 12,000,000 Hectares of Land
1644: William Penn: The Man who Owned 12,000,000 Hectares of Land
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1792: The White House was Built by Black Slaves and European Immigrants
1792: The White House was Built by Black Slaves and European Immigrants
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1775: Birth of the Largest Navy in the World
1775: Birth of the Largest Navy in the World
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1857: The Builder of Arlington House near Washington
1857: The Builder of Arlington House near Washington
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2001: American-British Invasion of Afghanistan Begins
2001: American-British Invasion of Afghanistan Begins
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1956: The Man to whom we Owe Frozen Food
1956: The Man to whom we Owe Frozen Food
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1683: The First Large Wave of German Immigrants to North America
1683: The First Large Wave of German Immigrants to North America