The first Session of the Indian National Congress was held in Bombay in 1885. The session was attended by 72 delegates who represented different parts of India. The session was presided over by Womesh Chandra Bonnerjee.

Reasons for the formation of Indian National Congress:
1. To promote unity among Indians and to develop a spirit of national consciousness.
2. To create a platform for Indians to express their grievances and to present their demands to the British government.
3. To work towards the attainment of self-government for India.

The first session of the Indian National Congress laid the foundation for the nationalist movement in India. The delegates discussed various issues such as the need for political and social reforms, the promotion of education and the protection of civil liberties.

The Congress worked towards achieving its objectives through peaceful means such as petitions, public meetings and the press. The Congress also organised boycotts of British goods and services to exert economic pressure on the British government.

Over the years, the Congress became the main political organisation in India and played a key role in the struggle for independence. The Congress leaders such as Mahatma Gandhi, Jawaharlal Nehru, Sardar Patel and others led the freedom struggle through non-violent means and finally achieved independence in 1947.