Mother Teresa was declared a saint by Pope Francis during a ceremony at the Vatican.
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Pope Clement VII excommunicated King Henry VIII of England for his terrible behavior.
Mother Teresa arrived in India to help some of the country's poorest.
The Trevi Fountain, one of Rome's most famous landmarks, was opened to the public by Pope Clement XIII.
Pope Francis blamed Global warming on 'human selfishness.'
Pope Alexander VI divided the New World between Spain and Portugal.
