Queen Elizabeth II: A Life and Legacy in Pictures

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Born Elizabeth Alexandra Mary of the House of Windsor, Queen Elizabeth II went from heiress presumptive to leader of the commonwealth in less than 20 years, later becoming Britain's longest-lived and longest-reigning monarch, as well as the world's longest-reigning queen regnant and female head of state. Her reign has included 12 British prime ministers, seven archbishops of Canterbury and seven popes, as well as 13 U.S. presidents. Click through the gallery above to see some of the most important moments from the queen's life and legacy.