Tourism in West Bengal is in the South Asia region of Bengal, consisting of West Bengal and its neighbouring country of Bangladesh. It is the world's largest delta, and empties into the Bay of Bengal. It is one of the most fertile regions in the world, thus earning the nickname "The Green Delta". It stretches from the Hooghly River on the west to the Meghna River on the east. It is approximately across at the Bay of Bengal. Kolkata and Haldia are the principal Indian seaports on the delta. The Acharya Jagadish Chandra Bose Indian Botanic Garden or Calcutta Botanical Garden (previously known as
West Bengal Renaissance. A hotbed of the Indian independence movement through the early 20thcentury, Bengal was divided during India's independence in 1947 along religious lines into two separate entities: West Bengal, a state of India, and East Bengal, a province of Pakistan which later became independent Bangladesh. Between 1977 and 2011 the state was administered by the world's longest elected Communist government. The economy of West Bengal is the sixth-largest state economy in India with in gross domestic product and a per capita GDP of . The state's cultural heritage, besides varied folk traditions, includes authors in literature, such as Nobel laureate