Mohandas Karamchand Gandhi (1869-1948), also known as Mahatma Gandhi, was born in Porbandar in the present day state of Gujarat in India on October 2, 1869. He was raised in a very conservative family. He was educated in law at University College, London. In 1891, after having been admitted to the British bar, Gandhi returned to India and attempted to establish a law practice in Bombay, without much success. Two years later an Indian firm with interests in South Africa retained him as legal adviser in its office in Durban. Arriving in Durban, Gandhi found himself treated as a member of an inferior race. He was appalled at the widespread denial of civil liberties and political rights to Indian immigrants to South Africa. He threw himself into the struggle for elementary rights for Indians.

Gandhi became a leader in a complex struggle, the Indian campaign for home rule. Following World War I, in which he played an active part in recruiting campaigns, Gandhi, again advocating Satyagraha, launched his movement of non-violent resistance to Great Britain. When, in 1919, Parliament passed the Rowlatt Acts, giving the Indian colonial authorities emergency powers to deal with so-called revolutionary activities, Satyagraha spread throughout India, gaining millions of followers. A demonstration against the Rowlatt Acts resulted in a massacre of Indians at Amritsar by British soldiers; in 1920, when the British government failed to make amends, Gandhi proclaimed an organized campaign of non-cooperation. Indians in public office resigned, government agencies such as courts of law were boycotted, and Indian children were withdrawn from government schools. Throughout India, streets were blocked by squatting Indians who refused to rise even when beaten by police. Gandhi was arrested, but the British were soon forced to release him.

Economic independence for India, involving the complete boycott of British goods, was made a corollary of Gandhi's Swaraj (from Sanskrit, "self-governing") movement. The economic aspects of the movement were significant, for the exploitation of Indian villagers by British industrialists had resulted in extreme poverty in the country and the virtual destruction of Indian home industries. As a remedy for such poverty, Gandhi advocated revival of cottage industries; he began to use a spinning wheel as a token of the return to the simple village life he preached, and of the renewal of native Indian industries.

Gandhi became the international symbol of a free India. He lived a spiritual and ascetic life of prayer, fasting, and meditation. His union with his wife became, as he himself stated, that of a brother and sister. Refusing earthly possessions, he wore the loincloth and shawl of the lowliest Indian and subsisted on vegetables, fruit juices, and goat's milk. Indians revered him as a saint and began to call him Mahatma (great-souled), a title reserved for the greatest sages. Gandhi's advocacy of nonviolence, known as ahimsa (non-violence), was the expression of a way of life implicit in the Hindu religion. By the Indian practice of nonviolence, Gandhi held, Great Britain too would eventually consider violence useless and would leave India.

The Mahatma's political and spiritual hold on India was so great that the British authorities dared not interfere with him. In 1921 the Indian National Congress, the group that spearheaded the movement for nationhood, gave Gandhi complete executive authority, with the right of naming his own successor. The Indian population, however, could not fully comprehend the unworldly ahimsa. A series of armed revolts against the British broke out, culminating in such violence that Gandhi confessed the failure of the civil-disobedience campaign he had called, and ended it. The British government again seized and imprisoned him in 1922.

After his release from prison in 1924, Gandhi withdrew from active politics and devoted himself to propagating communal unity. Unavoidably, however, he was again drawn into the vortex of the struggle for independence. In 1930 the Mahatma proclaimed a new campaign of civil disobedience, calling upon the Indian population to refuse to pay taxes, particularly the tax on salt. The campaign was a march to the sea, in which thousands of Indians followed Gandhi from Ahmedabad to the Arabian Sea, where they made salt by evaporating sea water. Once more the Indian leader was arrested, but he was released in 1931, halting the campaign after the British made concessions to his demands. In the same year Gandhi represented the Indian National Congress at a conference in London.