Final answer:
Mahatma Gandhi went to London in 1931 to attend the Round Table Conference, significant for India's push towards independence.
Step-by-step explanation:
In 1931, Mahatma Gandhi traveled to London for the Round Table Conference, which was a series of conferences organized by the British government to discuss constitutional reforms in India. This was not Gandhi's first journey for political engagement beyond Indian soil, as he had spent time in South Africa advocating for the rights of the Indian community facing discrimination there. His reputation as a leader of the Indian independence movement and his commitment to non-violent civil disobedience were well established by the time he attended the conference in London. The conference was a pivotal event in the process of Indian self-rule and was significant in demonstrating the resolve of the Indian National Congress for complete independence from British colonial rule.