Saint Teresa of Calcutta, also known as Mother Teresa, was a Roman Catholic nun and missionary born on August 26, 1910, in Skopje, now part of North Macedonia. She dedicated her life to serving the poor and sick, founding the Missionaries of Charity in 1950, which focused on helping the most marginalized people in society. Her work gained international recognition, and she received numerous awards, including the Nobel Peace Prize in 1979. Saint Teresa was canonized as a saint by the Catholic Church on September 4, 2016, and is celebrated for her compassion and commitment to humanitarian efforts worldwide.