Final answer:
Gandhi was informed about another country's revolution by Subhas Chandra Bose, who collaborated with Japan and led the Indian National Army against British colonial rule.
Step-by-step explanation:
In the "Quit India" speech, Gandhi mentions being told about another country's revolution by Subhas Chandra Bose. Subhas Chandra Bose was a political rival of Gandhi and a former president of the Indian National Congress.
He assembled the Indian National Army (INA) to fight for the liberation of India. When the Japanese seized the Andaman Islands in 1942, they set up Bose as the leader of the Provisional Government of India, known as Azad Hind.