What were the reasons to partition Bengal in 1905?

Answer 1

Remaining highly controversial and debatable the political notion was expressed that Indian subcontinent, specifically British India, contained three political and ethnic communities. These were from a Hindu, Muslim and the Raj. Based on these reasoning's a further and even more divisive theory was proposed that Hindus and Muslims are somehow "distinct civilizations" necessitating a two state solution. This was despite the fact that the communities coexisted for more than a millennia across South and Central Asia and the Indian ocean regions. The exit of the British in 1947 from India came at the cost of a costly political solution partitioning the Punjab and Bengal based on sectarian lines. What ensued thereafter was a bloodbath and the largest single human exodus in history. In 1971 Bengal (then part of Pakistan) was invaded by the Indian Army and with its withdrawal came the formation of Bangladesh. For note, the Indian states of Bengal and the Punjab were partly retained during the partition.

Answer 2

The decision to effect the Partition of Bengal was announced in July 1905 by theViceroy of India, Lord Curzon