What event became the basis for much of Gandhis sense of duty?

The event that became the basis for much of Gandhi's sense of duty was his experience in South Africa, where he faced racial discrimination and injustice as an Indian immigrant. This prompted him to develop his philosophy of nonviolent resistance (Satyagraha) and a commitment to social justice. His fight against the oppressive laws imposed by the British colonial government instilled in him a deep sense of responsibility to advocate for the rights of the marginalized and oppressed. These experiences shaped his later efforts in India's struggle for independence.