Assam is a northeastern state of India with its capital at Dispur located in the Guwahati city. Located south of the eastern Himalayas, Assam comprises the Brahmaputra and the Barak river valleys and the Karbi Anglong and the North Cachar Hills with an area of 30,285 square miles (78,438 km˛). Assam is surrounded by the other six of the Seven Sister States: Arunachal Pradesh, Nagaland, Manipur, Mizoram, Tripura and Meghalaya. These states are connected to the rest of India via a narrow strip in West Bengal called the Siliguri Corridor or "Chicken's Neck". Assam also shares international borders with Bhutan and Bangladesh; and cultures, peoples and climate with South-East Asia—important elements in India's Look East policy.
Assam became a part of India after the British occupied the region following the Treaty of Yandaboo of 1826. It is known for Assam tea, large and old petroleum resources, Assam silk and for its rich biodiversity. Assam has successfully conserved the one-horned Indian rhinoceros from near extinction, along with the tiger and numerous species of birds, and it provides one of the last wild habitats for the Asian elephant. It is becoming an increasingly popular destination for wild-life tourism, and Kaziranga and Manas are both World Heritage Sites. Assam was also known for its Sal tree forests and forest products, much depleted now. A land of high rainfall, Assam is endowed with lush greenery and the mighty river Brahmaputra, whose tributaries and oxbow lakes provide the region with a unique hydro-geomorphic and aesthetic environment.