Sikkim is a state in Northeast India. It borders the Tibet Autonomous Region of China in the north and northeast, Bhutan in the east, Nepal in the west and the Indian state of West Bengal in the south. Sikkim is also located close to India’s Siliguri Corridor near Bangladesh. Sikkim is the least populous and second smallest among the Indian states. A part of the Eastern Himalaya, Sikkim is notable for its biodiversity, including alpine and subtropical climates, as well as being a host to Kanchenjunga, the highest peak in India and third highest on Earth. Sikkim’s capital and largest city is Gangtok. Almost 35% of the state is covered by the Khangchendzonga National Park. The Kingdom of Sikkim was founded on the Silk Road by the Namgyal dynasty in the 17th century. It was ruled by a Buddhist priest-king known as the Chogyal. It became a princely state of British India in 1890. After 1947, Sikkim continued its protectorate status with the republic of India. It enjoyed the highest literacy rate and per ca-pita income among Himalayan states. In 1975, the Indian military deposed the Sikkimese monarchy. A referendum in 1975 led to Sikkim joining India as its 22nd state.