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 did the Panama Canal open?
“The Panama Canal opened on August 15, 1914.”
Reference: Panama Canal Authority
More from this shelf
How does the Panama Canal lift ships?
The Panama Canal uses locks to lift ships about 85 feet up to Gatun Lake and then lower them back down to sea level.
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.