Development leading to the launching of non-corporation movement:

The non-corporation movement was launched as a response to the oppressive policies of British colonial rule in India. It was a significant phase in India's struggle for independence and played a crucial role in mobilizing the masses against British rule. The movement gained momentum during the early 20th century and was characterized by various developments and events. Let's delve into the details of the development that led to the launching of the non-corporation movement:

1. Simon Commission:
- In 1927, the British government set up the Simon Commission to review and suggest constitutional reforms for India.
- The Commission comprised all British members and had no representation from India.
- This move was seen as an insult to the Indian nationalists and triggered widespread protests throughout the country.

2. Boycott of the Simon Commission:
- The Indian National Congress, under the leadership of Jawaharlal Nehru, called for the boycott of the Simon Commission.
- Indians from all walks of life, including students, workers, and peasants, participated in protests and demonstrations against the Commission.
- The boycott movement gained massive public support and became a symbol of Indian unity against British oppression.

3. Salt March:
- In 1930, Mahatma Gandhi launched the historic Salt March to protest against the British monopoly on salt production and the imposition of salt taxes.
- Gandhi, along with his followers, walked over 240 miles from Sabarmati Ashram to Dandi, where they symbolically manufactured salt by evaporating seawater.
- The Salt March captured the imagination of the Indian masses and sparked widespread civil disobedience against British authorities.

4. Civil Disobedience Movement:
- Inspired by the Salt March, the Indian National Congress launched the Civil Disobedience Movement in 1930.
- The movement aimed to challenge British authority by non-violent means and included acts of non-cooperation, boycotts, and protests.
- Indians from all walks of life participated in the movement, leading to mass arrests and widespread disruptions to British administration.

5. Suspension of the non-corporation movement:
- The non-corporation movement faced severe repression from the British authorities.
- The British government responded with harsh measures, including the arrest of prominent leaders and the use of violence against protesters.
- In 1931, the movement was temporarily suspended due to internal disagreements within the Indian National Congress.

In conclusion, the launching of the non-corporation movement was a result of various developments, including the Simon Commission, the boycott movement, the Salt March, and the subsequent Civil Disobedience Movement. These events galvanized the Indian masses and paved the way for a united struggle against British colonial rule. The non-corporation movement played a pivotal role in India's fight for independence and left a lasting impact on the country's history.