What did Mother Teresa do to become famous?

Mother Teresa sacrificed her life to help the needy in India. She quit her teaching job and trained as a nurse after receiving a calling from Christ.

She was born in a Roman Catholic Church and devoted her life to God when still at a young age. After the calling, she received medical training and voyaged into Calcutta to help the needy, the sick, the poor and the hopeless. She transformed the calling into a concrete action to give help to people. This made her become popular worldwide and she received several formal recognitions for her work for charity. Mother Teresa helped both Christians and Muslims without looking at a person's faith.