Why did british partitioned bengal in 1905

The British partitioned Bengal so that the province of Bengal can be easily and more safely governed compared to the large province being governed as a single province.

Explanation:

At the time of the partition, Bengal was the largest province of the Indian states under the Britishers. The Lieutenant Governor Lord Curzon believed that it will be easier to "divide" the province and rule if the province is made into smaller provinces.

Following the policy of "divide and rule", Bengal was partitioned into two- East and West Bengal, separating the Hindus and Muslim population. Though the 'alleged' intention was to separate Bengal and not on religious grounds, the separation ended in a chasm between the Hindus and Muslims. But the main reason for the Partition of Bengal was for administrative purposes, to make the governing of the provinces easier and more accessible.  

the united states has a federal government. the president is the head of the federal government of the united states. however, each state forms its government for administration purposes. the powers of the state governments are exercised within restricted state boundaries. and citizens participate in this government by voting.

i believe that the answer to the question provided above is that the role of campaign committees is to act as a bridge between state and local campaigns.