The correct answer is Bengal and Bihar. Explanation & Key Takeaways: Civil Rebellion: • The series of civil rebellions, which run like a thread through the first 100 years of British rule, were often led by deposed rajas and nawabs or their descendants uprooted and impoverished zamindars, landlords and poligars (landed military magnates in South India), and ex-retainers and officials of the conquered Indian states. • The backbone of the rebellions, their mass base and striking power came from the rack-rented peasants, ruined artisans and demobilized soldiers. • The civil rebellions began as British rule was established in Bengal and Bihar, arid they occurred in area after area as it was incorporated into the colonial rule. • There was hardly a year without armed opposition or a decade without a major armed rebellion in one part of the country or the other. From 1763 to 1856, there were more than forty major rebellions apart from hundreds of minor ones. • Displaced peasants and demobilized soldiers of Bengal led by religious monks and dispossessed zamindars were the first to rise up in the Sanyasi rebellion. • It was followed by the Chuar uprising which covered five districts of Bengal and Bihar. • Other major rebellions in Eastern India were those of Rangpur and Dinajpur, 1783; Bishnupur and Birbhum, 1799; Orissa zamindars, 1804-17; and Sambalpur, 1827-40.