Not yet a president but still a lawyer, Abraham Lincoln received U.S. Patent No. 64,469 for his design of a floating dry dock. Lincoln was a patent law specialist and gave public lectures on the subject. Lincoln said the patent system adds a fuel of interest to the fire of genius.
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What saints did the conquistadors pray to and why did they decide to conquer Mexico? What was the ethnic, regional, and age composition of the Conquista?