Which dynasty ruled the longest in ancient Assam region ?

The correct answer is option 1. Key Points The Ahom dynasty ruled Assam for nearly 600 years (1228 CE – 1826 CE), the longest continuous rule in the region. Founded by Sukaphaa, a Tai prince who entered Assam through Patkai Hills in 1228, the Ahoms gradually expanded their kingdom. They successfully resisted the Delhi Sultanate, the Mughals (notably at the Battle of Saraighat, 1671 under Lachit Borphukan), and maintained a strong independent state until the Treaty of Yandabo (1826) when Assam was annexed by the British after the First Anglo-Burmese War. Other options: Barmans (Dimasa Kacharis) → Ruled parts of Assam but for a shorter duration. Koch dynasty → Powerful in 16th century but limited rule. Sutiyas → Controlled Upper Assam before being absorbed by the Ahoms.