Tourism in India by state Pradesh is important with its wealth of historical monuments and religious fervour. It is the home of Taj Mahal, and Hinduism's holiest city, Varanasi. The most populous state of the Indian Union also has a rich cultural heritage. Kathak one of the eight forms of Indian classical dance, originated from Uttar Pradesh. Uttar Pradesh is known as "The Heartland of India". Cuisine of Uttar Pradesh like Awadhi cuisine, Mughlai cuisine, Kumauni cuisine are very famous in entire India and abroad. Kolkata (formerly Calcutta), is the capital of West Bengal has been nicknamed the "City of Palaces", "City of Joy", etc.
Bangladeshis in India migration was commonplace between the region which is now Bangladesh and the regions of Assam and West Bengal. While under colonial rule Assam was sparsely populated and the British, who wanted to exploit the resources from the region wished to see it settled. Through internal migration labour was brought from the northern regions of India, West Bengal and the region which now comprises Bangladesh. During the Bangladesh liberation war it is estimated that up to 10 million people fled from East Pakistan to India so as to escape the genocidal actions being carried out by the West Pakistan armed forces.