Why was Bengal partitioned in 1905?

The partition was announced in 1905. The way in which Curzon partitioned Bengal appeared to many people as a politically motivated affair. Firstly, as it appeared, Curzon had a deep hatred towards Bengalis and, therefore, he wanted to break their solidarity as a people.

Curzon had stated that the eastern region was neglected and under-governed and hence, by splitting the province, an improved administration could be established there.