In what ways was Mother Teresa an active, informed, and global citizen?

There are a number of people who, while living, were respected by many people in the world, and ever after their death, are missed; Mother Teresa was the one of them. In my opinion, Mother Teresa was an active, informed, and global citizen because Mother Teresa dedicated her whole life to help the poor, and she did a lot of work for them successfully. Also, she influenced on the world in good ways.
First of all, Mother Teresa dedicated her whole life to caring for the weak and impoverished. At the age of twelve, she realized that instead of leading a life of her own she had to live to help the poor. And she endeavored for the poor her whole life. It...