Kolkata(Calcutta)is the capital of the Indian state of West Bengal. It is located in eastern India on the east bank of the River Hooghly. The city has a population of almost 11 million, with an extended metropolitan population of over 14 million, making it the third-largest urban agglomeration and the third-largest city in India. The city was very populated and served as the capital of India during the British Raj until 1911. Since the year 2000, an economic rejuvenation has arrested the morbid decline, leading to a spurt in the city's growth. A vibrant city with a distinct socio-political culture, Kolkata is noted for its revolutionary history, ranging from the Indian struggle for independence to the leftist and trade union movements.