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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- When was a Channel Tunnel first proposed?
“A tunnel under the English Channel was first proposed in 1802.”
Reference: Getlink
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When did the Channel Tunnel open?
The Channel Tunnel between England and France opened in 1994, and its 38-kilometer undersea section is the longest in the world.
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.