Pope Francis has declared Mother Teresa a saint as part of his Holy Year of Mercy.
Applause erupted in St. Peter's Square even before he finished pronouncing the rite of canonization at the start of the Mass.
Hundreds of Missionaries of Charity sisters in their trademark blue-trimmed saris had front-row seats at the Mass alongside 1,500 homeless people and 13 heads of state or government, including Queen Sofia of Spain.
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