The Indian independence movement was a series of activities whose ultimate aim was to end the occupation of the British Empire in India and encompassed activities and ideas aiming to end the East India Company rule (1757–1857) and the British Indian Empire (1857–1947) in the Indian subcontinent. The movement spanned a total of 90 years (1857–1947) considering movement against British Indian Empire. The Indian Independence movement includes both protest(peaceful and non-violent) and militant(violent) mechanisms to root out British Administration from India.
The first organised militant movements were in Bengal, but they later took root in the newly formed Indian National Congress with prominent moderate leaders seeking only their basic right to appear for Indian Civil Service (British India) examinations, as well as more rights, economic in nature, for the people of the soil. The early part of the 20th century saw a more radical approach towards political self-rule proposed by leaders such as the Lal, Bal, Pal and Aurobindo Ghosh, V. O. Chidambaram Pillai. The last stages of the self-rule struggle from the 1920s onwards saw Congress adopt Mohandas Karamchand Gandhi's policy of nonviolence and civil disobedience, and several other campaigns. Nationalists like Subhash Chandra Bose, Bhagat Singh, Bagha Jatin preached armed revolution to achieve self-rule. Poets and writers such as Subramania Bharati, Rabindranath Tagore, Muhammad Iqbal, Josh Malihabadi, Mohammad Ali Jouhar, Bankim Chandra Chattopadhyay and Kazi Nazrul Islam used literature, poetry and speech as a tool for political awareness. Feminists such as Sarojini Naidu and Begum Rokeya promoted the emancipation of Indian women and their participation in national politics. B. R. Ambedkar championed the cause of the disadvantaged sections of Indian society within the larger self-rule movement. The period of the Second World War saw the peak of the campaigns by the Quit India Movement led by Congress, and the Indian National Army movement led by Subhas Chandra Bose.
The Indian self-rule movement was a mass-based movement that encompassed various sections of society. It also underwent a process of constant ideological evolution. Although the basic ideology of the movement was anti-colonial, it was supported by a vision of independent capitalist economic development coupled with a secular, democratic, republican, and civil-libertarian political structure. After the 1930s, the movement took on a strong socialist orientation, owing to the influence of Bhagat Singh's demand of Purna Swaraj (Complete Self-Rule). The work of these various movements led ultimately to the Indian Independence Act 1947, which ended the suzerainty in India and the creation of Pakistan. India remained a Dominion of the Crown until 26 January 1950, when the Constitution of India came into force, establishing the Republic of India; Pakistan was a dominion until 1956, when it adopted its first republican constitution. In 1971, East Pakistan declared independence as the People's Republic of Bangladesh.