Lachit Barphukan was a commander and Borphukan, in the _______, located in present-day Assam.

The correct answer is Ahom kingdom . Key Points Lachit Barphukan was a commander and Borphukan, in the Ahom kingdom. Lachit was the son of Momai Tamuli Barbara , former commander-in-chief of the Ahom army. Additional Information Ahom dynasty (1228–1826) : ​The Ahom kingdom was a late medieval kingdom in the Brahmaputra Valley in Assam . It maintained its sovereignty for nearly 600 years having successfully resisted Mughal expansion in Northeast India . The dynasty was established by Sukaphaa , a Shan prince of Mong Mao (present-day Yunnan, China) who came to Assam after crossing the Patkai mountains. The 13th-century ruler, Chaolung Sukaphaa is considered to be the founder of the Ahom Kingdom. Their capitals were Charaideo, Jorhat. Founded: 1228