1. The Indian National Congress was founded in 1885 and led India's independence movement against British rule.
2. After independence in 1947, the Congress became the dominant political party, holding power until 1977 and periodically after.
3. Key Congress leaders and prime ministers included Jawaharlal Nehru, Indira Gandhi, Rajiv Gandhi, P.V. Narasimha Rao, and Manmohan Singh.