In summer 1921, Franklin Delano Roosevelt got infected with poliomyelitis – the scourge of 1920s – during a vacation near Campobello Lake in Canada. As a result of it, he remained wheelchair-bound from that very time to the very death. Though the infectious nature of poliomyelitis was proved back in 1909, it took about half a century to invent the vaccine. Only on March 26, 1953 the disease that had made the US president and hundreds of thousands of other people wheelchair-bound was finally defeated.
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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?