Final answer:
Helen Keller's journey in learning to communicate, with the help of her teacher Anne Sullivan, played a crucial role in shaping her identity and enabling her to become an influential activist and lecturer.
Step-by-step explanation:
Helen Keller's experiences learning to communicate profoundly shaped her identity. Lacking the ability to see and hear, Keller found ways to connect with the world through the assistance of her teacher, Anne Sullivan. The process of learning finger spelling was a gateway to language for Keller and introduced her to a new mode of expression and interaction.
This literacy not only allowed her to build a bridge to the outside world but also helped to construct her self-identity. As a result, Keller transcended her physical limitations to become a well-educated activist and lecturer, using her newfound literacies to champion the causes of people with disabilities and illustrate the resilience of the human spirit.