What is starting point and ending point of Independence Movement?

The Indian independence movement was a series of historic events with the ultimate aim of ending the British rule in India. The movement spanned from 1857 to 1947.[1] The first nationalistic revolutionary movement for Indian independence emerged from Bengal.[2] It later took root in the newly formed Indian National Congress with prominent moderate leaders seeking only their fundamental right to appear for Indian Civil Service examinations in British India, as well as more rights (economical 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 triumvirate, Aurobindo Ghosh and V. O. Chidambaram Pillai.[3]

B. R. Ambedkar championed the cause of the disadvantaged sections of Indian society within the more significant self-rule movement.[4] The period of the World War II 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 with the help of Japan.[3]

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 underlying ideology of the campaign 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. The work of these various movements ultimately led 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.[5]

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answer would be b, a tariffs main purpose is to protect domestic production and jobs.

answer; if congress didn't act on certain requests;