J.B. Sutherland from Detroit patented refrigerated railroad cars.
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Scottish civil engineer Thomas Telford designed and completed The Pontcysyllte Aqueduct.
The UK-based computer company Raspberry Pi released their $5 (£4) computer.
President George Washington proclaimed the day an official National Day of Thanksgiving for the United States of America.
NASA launched the Mars Science Laboratory probe, which carried the Curiosity Rover to Mars.
The United States exhibited the country's first-ever lion in Boston.
