She left the Sisters of Loreto and began working with the poor in 1948. In 1950 her new religious order, the Missionaries of Charity, was approved by Pope Pius XII.
Teresa was the name she chose upon becoming a nun. The title 'Mother' was a title given by the Sisters of Loreto to all nuns in the order.
Mother Teresa opened the first Home for the Dying in Calcutta in 1952.
Calcutta
She started helping the unwanted , unloved and uncared peoples in India.
In a open field
Mother Teresa did not go to school. Girls were not allowed to attend school in Albania at the time. She was home schooled by her parents.
She founded the Missionaries of Charity.
From her earliest years she believed in Jesus.
Yes, she started the Missionaries of Charity.
Mother Teresa did not start a company, she founded the Missionaries of Charity who work in a variety of charitable situations including orphanages.
She started in Calcutta, India, but her Missionaries of Charity eventually ended up working in nearly every country on earth.
Mother Teresa started it, now go look up the information yourself