Explanation:

After a few initially unsuccessful attempts to gain independence for Assam during the 1850s, anti-colonial Assamese joined and actively supported the Indian National Congress against the British from the early 20th century, with Gopinath Bordoloi emerging as the preeminent nationalist leader in the Assam Congress. Bordoloi's major political rival in this time was Sir Saidullah, who was representing the Muslim League, and had the backing of the influential Muslim cleric Maulana Bhasani. The Assam Postage Circle was established by 1873 under the headship of the Deputy Post Master General.