What were the earlier experiments of Mahatma Gandhi in India?

Gandhiji's first experiment with satyagraha occurred at Champaran, Bihar, in 1917. Here, he led the indigo farmers of Champaran in a struggle against the European planters. The movement was successful and the Government was compelled to increase the price of indigo ultimately

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basic principles: federalism, separation of powers, checks and balances, judicial review, representative democracy, limited government, rule of law, individual rights and responsibilities, consent of the governed, majority rule, popular sovereignty, equal protection.