Pope Francis began his first full day as leader of the world's 1.2 billion Roman Catholics Thursday with prayers and a celebration of Mass with the cardinals who elected him.
Pope Francis's First Days as the Pope
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In this image made from video provided by CTV, Pope Francis celebrates his inaugural Mass with cardinals, inside the Sistine Chapel, at the Vatican, March 14, 2013.
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Newly elected Pope Francis waves from the steps of the Santa Maria Maggiore Basilica in Rome, March 14, 2013.
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Newly elected Pope Francis walks in the Basilica of Santa Maria Maggiore during a private visit in Rome, March 14, 2013.
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Newly elected Pope Francis makes a private visit to the 5th-century Basilica of Santa Maria Maggiore, in a photo released by Osservatore Romano in Rome, March 14, 2013.