Helen Keller's life was shaped by various key influences that defined her as an activist and author. The most significant was her deafness and blindness, which she faced from infancy; this experience honed her understanding of communication and led to her advocacy for those with disabilities. Her relationship with Anne Sullivan, her teacher, was transformative; Sullivan taught Keller to communicate, unlocking her ability to express her thoughts and emotions. Additionally, Keller was influenced by social reform movements, including women's rights and labor rights, which inspired her to fight for equality and justice throughout her life.