Mother Teresa, the Roman Catholic nun who spent much of her life giving aid to India's poor, was declared a saint on Sunday in a canonization Mass led by Pope Francis.
The Pope addressed the thronging crowd that gathered in St. Peter's Square, at the heart of Vatican City, to bear witness as he delivered the formula of canonization.
Saint Teresa died on Sept. 5, 1997, at age 87, with a lengthy list of humanitarian accomplishments to her name. Notably, she founded the Missionaries of Charity, a global congregation that provides aid to the the poor, infirm and homeless. She also won the Nobel Peace Prize in 1979, in recognition of her efforts.
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