Mother Teresa's humanitarian efforts were profoundly influenced by her personal experiences, particularly her missionary work in the slums of Calcutta. Witnessing extreme poverty, disease, and suffering firsthand compelled her to dedicate her life to helping the poor and marginalized. Her Christian faith also played a pivotal role, guiding her philosophy of serving "the least of these.” The challenges she encountered shaped her understanding of compassion and driven her to establish the Missionaries of Charity, which extended her mission internationally. Her tireless advocacy for the needy became emblematic of selfless service and inspired countless others.