Siliguri, ) is a major tier-II city in West Bengal. It forms "Twin Cities" with the neighboring district capital of Jalpaiguri. The city spans areas of the Darjeeling and Jalpaiguri districts in the Indian state of West Bengal. Known as the "Gateway of Northeast India", Siliguri is popular for three Ts - tea, timber and tourism. It is located on the banks of the Mahananda River and the Teesta River at the foothills of the Himalayas. Siliguri is the third largest urban agglomeration in West Bengal, after Kolkata and Asansol. Siliguri has great strategic importance in West Bengal. It is located conveniently, connecting four international borders i.e. China, Nepal, Bangladesh and Bhutan. It also connects the North-East with mainland India. Located at the foothills of Eastern Himalayas, Siliguri is a significant trading and transportation hub. History Middle Ages history According to Sailen Debnath, "Siliguri" means a stack of pebbles or stones. Until the 19th century this region was called as "Shilchaguri" when there was dense Dolka forest covering the region. Siliguri was a small agricultural village in the Kingdom of Sikkim. It was captured by the Kingdom of Nepal in 1788, after which Kirati and Nepali Lepchas came to settle in this region. At that time a river port on Mahananda, South of Siliguri in Phansidewa had an important role in having trade bond with Malda, Bengal and Bihar. This riverine trade line was thus used by the Bhutanese and Sikkimese to bring goods into their mainland. Modern history Siliguri started as a small area i.e. now Saktigarh, southern part of city, on the bank of Mahananda River. Treaty of Sugauli in 1815 signed between Britain-Nepal, changed the prospect of Siliguri. As it became a point of transit with Darjeeling hills and Nepal mainland. 1815 onwards, Siliguri started growing rapidly as a small city due to its strategic convenience of trade. In 1865, the British captured Darjeeling and the entire Dooars region to build tea plantations and export the produce to England. For easy exportation they introduced the Siliguri Town railway station which stands to this day, and introduced the Toy train from the station to Darjeeling in 1880. This helped Siliguri gain sub-divisional town status in 1907. The "Siliguri Corridor" was formed when Bengal was divided into West Bengal and East Pakistan (later Bangladesh) in 1947, with Sikkim later merging with India in 1975. At this point many immigrants