Northeast India is the eastern-most region of India. It comprises of the contiguous Seven Sister States (Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, and Tripura), and the Himalayan state of Sikkim. The Siliguri Corridor in West Bengal, with a width of 21 to 40 kilometres (13 to 25 mi),[1] connects the North Eastern region with East India. The region shares more than 4,500 kilometres (2,800 mi) of international border (about 90 per cent of its entire border area) with China (Tibet) in the north, Myanmar in the east, Bangladesh in the southwest, and Bhutan to the northwest