The second split in the Indian National Congress occurred at a special session held in Mumbai in August 1918. This split happened over the differences regarding the Montagu-Chelmsford reform proposals. Moderate leaders like Surendranath Banerjee supported the reforms, while the Extremists and younger leaders rejected them as “disappointing and unsatisfactory.” This led to the Moderates leaving the Congress to form the National Liberal Federation. ANSWER: (A) Mumbai, 1918