Who among the following called the Movements of Gandhiji as ‘Political Blackmail’?

Who among the following annulled the Partition of Bengal?

Who among the following advocated the construction of initial railways in India for facilitating army movement?

Who among the following is associated with the policy of ‘Masterly Inactivity’ :

Who among the following formulated and implemented the ‘Doctrine of Lapse’?

Who among the following abolished ‘Dual Government’ system in Bengal?