In which year the provinces of Bengal and Assam were reconstituted so as to form two provinces of manageable size:

In which year the provinces of Bengal and Assam were reconstituted so as to form two provinces of manageable size:

کس سال بنگال اور آسام کے صوبوں کی تشکیل نو کی گئی تاکہ قابل انتظام سائز کے دو صوبے بنائے جا سکیں
Explanation
Partition of Bengal was made by Lord Curzon
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Lord Curzon issued the order to partition Bengal on 16 October 1915.
Lord Curzon divided Bengal into 2 provinces
Bengal was divided into two provinces: in 1905.
Partition of Bengal came into force on 16 October 1905
Hindus and Congress agitated for the Partition of Bengal.