J.B. Kripalani, also known as Acharya Kripalani, was a prominent Indian politician and freedom fighter. He played a significant role in the Indian independence movement and later became a leader of the Indian National Congress.

- Early Life and Education:
J.B. Kripalani was born on 11 November 1888 in Hyderabad, Sindh (now in Pakistan). He came from a middle-class family and grew up in a politically aware environment. He completed his education in Lahore, where he studied at the Government College and later at the Forman Christian College.

- Role in the Indian Independence Movement:
Kripalani actively participated in the Indian freedom struggle. He joined the Indian National Congress and worked closely with Mahatma Gandhi. He played a crucial role in organizing various protests, civil disobedience movements, and non-violent resistance against British rule.

- Leadership and Political Career:
After India gained independence in 1947, Kripalani served as a member of the Constituent Assembly and later became the President of the Indian National Congress in 1947-48. He was known for his strong principles, commitment to social justice, and his advocacy for the rights of peasants and workers.

- Contribution to the Indigo Movement:
Kripalani's involvement in the Indigo movement is mentioned in Chapter 5 - "Indigo" of the CBSE Class 12 Flamingo textbook. The chapter explores the historical context of the Indigo cultivation system in Bengal and the plight of the indigo farmers. Kripalani played a crucial role in highlighting the exploitative practices of the British indigo planters and mobilizing support for the indigo farmers.

- Summary of Chapter 5 - Indigo:
Chapter 5 of the CBSE Class 12 Flamingo textbook provides an overview of the historical background of the indigo cultivation system in Bengal during the British colonial period. It discusses the exploitative practices of the British indigo planters, such as the "tinkathia" system, which forced the farmers to cultivate indigo against their will.

The chapter also highlights the resistance and protests by the indigo farmers against these oppressive practices, with J.B. Kripalani playing a significant role in mobilizing support for their cause. The chapter sheds light on the struggles faced by the farmers and the eventual decline of the indigo industry due to widespread protests.

In conclusion, J.B. Kripalani was a prominent Indian politician and freedom fighter who played a crucial role in the Indian independence movement. His contribution to the Indigo movement and his advocacy for the rights of peasants and workers are noteworthy.