The indigo cultivators' strike and agitation in Bengal (1859-60), famously portrayed in Dinabandhu Mitra's play 'Neel Darpan', centered around the oppressive system known as:

💡 Solution & Explanation

The Dadan system involved European indigo planters forcing Bengali peasants to accept monetary advances and cultivate indigo under deeply exploitative contractual terms. This oppressive agricultural practice triggered the widespread indigo revolt documented vividly in Dinabandhu Mitra's famous drama Neel Darpan. The agitation eventually led to the appointment of the Indigo Commission and legislative safeguards for cultivators.