How accurately is the Great Pyramid aligned?
The Great Pyramid's sides are aligned almost exactly with true north, south, east, and west, a stunning feat of precision for ancient engineers.
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- What was the Hoover Dam once called?
“The Hoover Dam was called Boulder Dam from 1933 to 1947.”
Reference: US Bureau of Reclamation
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When was the Hoover Dam completed?
The Hoover Dam was completed in 1936.
How did the Louisiana Purchase change the size of the US?
In 1803 the US bought the Louisiana Territory from France for about $15 million. The deal roughly doubled the size of the country.