Bank of India (BOI) is a central public sector undertaking. It is under the ownership of the Ministry of Finance, Government of India . It has headquarters in Bandra Kurla Complex, Mumbai. Founded in 1906, it has been government-owned since nationalisation in 1969. BoI is a founder member of SWIFT (Society for Worldwide Inter Bank Financial Telecommunications), which facilitates provision of cost-effective financial processing and communication services. As on 31 March 2021, Bank of India's total business stands at ₹1,037,549 crore (US$130 billion), has 5,108 branches and 5,551 ATMs around the world (including 24 overseas branches).

West Bengal (, Bengali: Poshchim Bongo, pronounced [ˈpoʃtʃim ˈbɔŋɡo] (listen), abbr. WB) is a state in the eastern region of India along the Bay of Bengal. With over 91 million inhabitants, it is the fourth-most populous state and the thirteenth-largest state by area in India. Covering an area of 88,752 km2 (34,267 sq mi), it is also the eighth-most populous country subdivision of the world. Part of the Bengal region of the Indian subcontinent, it borders Bangladesh in the east, and Nepal and Bhutan in the north. It also borders the Indian states of Odisha, Jharkhand, Bihar, Sikkim and Assam. The state capital is Kolkata, the third-largest metropolis, and seventh largest city by population in India. West Bengal includes the Darjeeling Himalayan hill region, the Ganges delta, the Rarh region, the coastal Sundarbans and the Bay of Bengal. The state's main ethnic group are the Bengalis, with the Bengali Hindus forming the demographic majority. The area's early history featured a succession of Indian empires, internal squabbling, and a tussle between Hinduism and Buddhism for dominance. Ancient Bengal was the site of several major Janapadas, while the earliest cities date back to the Vedic period. The region was part of several ancient pan−Indian empires, including the Vangas, Mauryans, and the Guptas. The citadel of Gauḍa served as the capital of the Gauḍa Kingdom, the Pala Empire, and the Sena Empire. Islam was introduced through trade with the Abbasid Caliphate, but following the Ghurid conquests led by Bakhtiyar Khalji and the establishment of the Delhi Sultanate, the Muslim faith spread across the entire Bengal region. During the Bengal Sultanate, the territory was a major trading nation in the world, and was often referred by the Europeans as the "richest country to trade with". It was absorbed into the Mughal Empire in 1576. Simultaneously, some parts of the region were ruled by several Hindu states, and Baro-Bhuyan landlords, and part of it was briefly overrun by the Suri Empire. Following the death of Emperor Aurangzeb in the early 1700s, the proto-industrialised Mughal Bengal became a semi-independent state under the Nawabs of Bengal, and showed signs of the first Industrial revolution. The region was later conquered by the British East India Company at the Battle of Plassey in 1757 and became part of the Bengal Presidency.The region was a hotbed of the Indian independence movement and has remained one of India's great artistic and intellectual centres. Following widespread religious violence, the Bengal Legislative Council and the Bengal Legislative Assembly voted on the Partition of Bengal in 1947 along religious lines into two independent dominions: West Bengal, a Hindu-majority Indian state, and East Bengal, a Muslim-majority province of Pakistan which later became the independent Bangladesh. Post Indian independence, West Bengal's economy is based on agricultural production and small and medium-sized enterprises. For many decades the state underwent political violence and economic stagnation. In 2020–21, the economy of West Bengal is the sixth-largest state economy in India with a gross state domestic product (GSDP) of ₹13.54 lakh crore (US$170 billion), and has the country's 20th-highest GSDP per capita of ₹121,267 (US$1,500).West Bengal also has the 28th-highest ranking among Indian states in human development index, with the index value being less than that of India. The state government debt of ₹4.8 lakh crore (US$60 billion), or 35.54% of GSDP, is fifth highest India, but has dropped from 40.65% since 2010–11. There is moderate unemployment. West Bengal has two World Heritage sites and ranks as the seventh-most visited tourist destination in India.

Darjeeling (, Bengali: [ˈdarˌdʒiliŋ], Nepali: [darˈd͡ziliŋ]) is a town and municipality in the northernmost region of the Indian state of West Bengal. Located in the Eastern Himalayas, it has an average elevation of 2,045 metres (6,709 ft). To the west of Darjeeling lies the easternmost province of Nepal, to the east the Kingdom of Bhutan, to the north the Indian state of Sikkim, and farther north the Tibet Autonomous Region region of China. Bangladesh lies to the south and southeast, and most of the state of West Bengal lies to the south and southwest, connected to the Darjeeling region by a narrow tract. Kangchenjunga, the world's third-highest mountain, rises to the north and is prominently visible on clear days.In the early 19th century, during East India Company rule in India, Darjeeling was identified as a potential summer retreat for British officials, soldiers and their families. The narrow mountain ridge was leased from the Kingdom of Sikkim, and eventually annexed to British India. Experimentation with growing tea on the slopes below Darjeeling was highly successful. Thousands of labourers were recruited chiefly from Nepal to clear the forests, build European-style cottages and work in the tea plantations. The widespread deforestation displaced the indigenous peoples. Residential schools were established in and around Darjeeling for the education of children of the domiciled British in India. By the late-19th century, a novel narrow-gauge mountain railway, the Darjeeling Himalayan Railway, was bringing summer residents into the town and carrying a freight of tea out for export to the world. After India's independence in 1947, as the British left Darjeeling, its cottages were purchased by wealthy Indians from the plains and its tea plantations by out-of-town Indian business owners and conglomerates. Darjeeling's population today is constituted largely of the descendants of the indigenous and immigrant labourers that were employed in the original development of the town. Although their common language, the Nepali language, has been given official recognition at the state and federal levels in India, the recognition has created little meaningful employment for the language's speakers nor has it increased their ability to have a significantly greater say in their political affairs. The tea industry and tourism are the mainstays of the town's economy. Deforestation in the region after India's independence has caused environmental damage, affecting the perennial springs that supply the town's water. The population of Darjeeling meanwhile has exploded over the years, and unregulated construction, traffic congestion and water shortages are common. Many young locals, educated in government schools, have taken to migrating out for the lack of jobs matching their skills. Like out-migrants from other regions of northeastern India, they have been subjected to discrimination and racism in some Indian cities. Darjeeling's culture is highly cosmopolitan—a result of diverse ethnic groups intermixing and evolving away from their historical roots. The region's indigenous cuisine is rich in fermented foods and beverages. Tourists have flocked to Darjeeling since the mid-19th century. In 1999, after an international campaign for its support, the Darjeeling Himalayan Railway was declared a World Heritage Site by UNESCO. In 2005, Darjeeling tea was given geographical indication by the World Trade Organization as much for the protection of the brand as for the development of the region that produces it.