Explanation:

The Assam Postage Circle was established by 1873 under the headship of the Deputy Post Master General. At the turn of the 20th century, British India consisted of eight provinces that were administered either by a governor or a lieutenant-governor. Assam Province was one among the major eight provinces of British India. The table below shows the major original provinces during British India covering the Assam Province under the Administrative Office of the Chief Commissioner.