Who among the following annulled the Partition of Bengal?

The Partition of Bengal, originally implemented by Lord Curzon in 1905 to divide the province into Eastern Bengal and Assam and the rest of Bengal, was officially annulled in 1911 [c4, t3]. The decision to revoke the partition was led by the Viceroy, Lord Hardinge, in response to intense dissatisfaction, the Swadeshi movement, and the rise of revolutionary terrorism [c1, t4]. The annulment was announced during the Delhi Durbar of 1911, attended by King George V. Alongside the reunification of Bengal, the British government decided to shift the capital of India from Calcutta to Delhi and created Bihar and Orissa as separate provinces [c1, t4]. While the move aimed to curb nationalist agitation, it was viewed as a setback by the Muslim political elite who had benefited from the 1905 arrangement [c1, t9].

Sources

1. [1] Rajiv Ahir. A Brief History of Modern India (2019 ed.). SPECTRUM. > Chapter 12: Era of Militant Nationalism (1905-1909) > Annulment of Partition > p. 269
2. [2] Modern India ,Bipin Chandra, History class XII (NCERT 1982 ed.)[Old NCERT] > Chapter 14: Nationalist Movement 1905—1918 > THE PARTITION OF BENGAL > p. 240