Lieutenant Zebulon Montgomery Pike explored the southwest portion of the Louisiana Territory in 1806 and though he never climbed the peak that bears his name (Pikes Peak, Colorado), he did publish a report that attracted a lot of interest to the area.
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Denver, Colorado lays claim to the invention of the cheeseburger. The trademark for the name Cheeseburger was awarded in 1935 to Louis Ballast.
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Colorado has the highest mean altitude of all the states.