What was the primary long-term reason for the decline and collapse of natural indigo production in Bengal by the early 20th century?

With which region is the 'Pabna Peasant Uprising' (1870s-1880s) associated?

Who led the Barhiya Tal (Bakasht land) peasant movement in Munger, Bihar during 1937–1939?

Match the following 20th-century resistance movements in the United Provinces (colonial Uttar Pradesh) with their primary leaders: Movements: A. Eka Movement B. Kumaon Forest Movement C. Awadh Kisan Sabha Leaders: 1. Badri Dutt Pande 2. Baba Ramchandra 3. Madari Pasi