Nickname comes from his mentor, Andrew Jackson, who was called Old Hickory. Polk entered Congress in 1824, when Jackson won the popular, but not the electoral vote to John Quincy Adams. When Jackson won both, in 1828, Polk became his protege.
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US becomes world's top exporter of liquified natural gas
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US becomes world's top exporter of liquified natural gas: LNG exports from the United States topped 7 million tonnes (7.7 million tons) in December, according to ship-tracking data from ICIS LNG Edge, narrowly edging out rival producers Qatar and Australia for the first time. #accelerationism
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The Articles of Confederation and Perpetual Union was the first written constitution of the United States.
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