When and why did Tilak leave the Indian National Congress?

Bal Gangadhar Tilak left the Indian National Congress in 1907 after there was a split in the Congress.

Tilak left the Indian National Congress because he did not agree with the methods and ideology of the Early Nationalist leaders. He stood for complete Swaraj to be achieved by more self-reliant methods. He also wanted to have a mass-base for their movement. He condemned the British rule in India and held it responsible for the country's downfall.