Bengali nationalism (, ) is a form of ethnolinguistic nationalism that focuses on Bengalis as a single ethnicity by rejecting imposition of other languages and cultures while promoting its own in Bengal. Bengalis speak the Bengali language and mostly live across Bangladesh and the Indian states of West Bengal, Tripura and Assam (Barak Valley). Bengali nationalism is one of the four fundamental principles according to the Constitution of Bangladesh and was the main driving force behind the creation of the independent nation state of Bangladesh through the 1971 liberation war. Bengali Muslims make up the majority (90%) of Bangladesh's citizens (Bangladeshis), and are the largest minority in the Indian states of Assam and West Bengal, whereas Bengali Hindus make up the majority of India's citizens (Indians) in Indian states of West Bengal and Tripura, and are the largest minority in the Indian states of Assam and Jharkhand and the independent state of Bangladesh (8%).

Bengali nationalism during British colonial rule

Background Bengali nationalism is rooted in the expression of pride in the history and cultural heritage of Bengal. After the defeat in the Battle of Plassey on 23 June 1757, and Battle of Buxar in 1764, former Mughal province of Bengal-Bihar came under direct British control in 1772. During British rule, Calcutta served as the capital of British controlled territories in India as well as that of the province of Bengal until 1910. During the period, Calcutta was the centre of education. From 1775 to 1941 the emergence of Bengal renaissance (from the birth of Raja Ram Mohan Roy to the death of Rabindranath Tagore) was seen, which has an effect in growing Bengali nationalism. At that time, oriental language started to revive. This time, many of the philosophers did their best among them Fakir Lalon Shah, Raja Ram Mohan Roy, Ishwar Chandra Vidyasagar, Jibanananda Das, Sarat Chandra Chatterjee, Rabindranath Tagore, Kazi Nazrul Islam, Mir Mosharraf Hossain are more influential. In what is described as the Bengal Renaissance, the introduction of Western culture, science and education led to a major transformation and development of Bengali society. Bengal became a centre of modern culture, intellectual and scientific activities, politics and education under British Raj.

The first social and religious reform movements such as the Brahmo Samaj and Ramakrishna Mission arose in Bengal, as did national leaders and reformers such as Raja Ram Mohan Roy, Sri Aurobindo, Ramakrishna Paramhansa and Swami Vivekananda. Bengali literature, poetry, religion, science and philosophy underwent a massive expansion with the works of Bankim Chandra Chatterjee, Debendranath Tagore, Michael Madhusudan Dutt, Ubaidullah Al Ubaidi Suhrawardy, Sharat Chandra Chattopadhyay, Rabindranath Tagore, Satyendra Nath Bose, Jagdish Chandra Bose and Kazi Nazrul Islam.

The Young Bengal, and Jugantar movements and newspapers like Amrita Bazar Patrika led the intellectual development of India. The Calcutta-based Indian National Association and the British Indian Association were the earliest political organisations in India.

Partition of Bengal (1905)

The first Bengali nationalist agitation emerged over the 1905 Partition of Bengal by British authorities. Although the partition was supported by Bengali Muslims, a large majority of Bengalis protested the partition and participated in civil disobedience campaigns such as the Swadeshi movement and mass boycott of European goods. Seeking a united Bengal and rejecting British hegemony, Bengalis also spearheaded an emerging revolutionary movement, which assumed a central role in the national independence struggle.

It was during this time the Mother Bengal was an immensely popular theme in Bengali patriotic songs and poems and was mentioned in several of them, such as the song ″Dhan Dhanya Pushpa Bhara″ (Filled with wealth and flowers) and ″Banga Amar Janani Amar″ (Our Bengal Our Mother) by Dwijendralal Ray. Rabindranath Tagore wrote Banglar Mati Banglar Jal (Soil of Bengal, water of Bengal) and Amar Sonar Bangla (My golden Bengal), the national anthem of modern Bangladesh as a rallying cry for proponents of annulment of Partition. These songs were meant to rekindle the unified spirit of Bengal, to raise public consciousness against the communal political divide.

Bengal became a strong base of the Indian struggle for independence, giving rise to national political leaders such as Bipin Chandra Pal, Khwaja Salimullah, Chittaranjan Das, Maulana Azad, Subhas Chandra Bose, his brother Sarat Chandra Bose, Syama Prasad Mookerjee, A. K. Fazlul Huq, Huseyn Shaheed Suhrawardy. Of these, A. K. Fazlul Huq, Huseyn Shaheed Suhrawardy were involved in communal politics; leading to a separate Muslim state with Pakistan. Huseyn Shaheed Suhrawardy has been historically attributed the onus for creating and abetting the Great Calcutta Killings in 1946.

United Bengal Proposal As the Hindu-Muslim conflict escalated and the demand for a separate Muslim state of Pakistan became popular amongst Indian Muslims, the partition of India on communal lines was deemed inevitable by mid-1947. To prevent the inclusion of Hindu-majority districts of Punjab and Bengal in a Muslim Pakistan, the Indian National Congress and the Hindu Mahasabha sought the partition of these provinces on communal lines. Bengali nationalists such as Sarat Chandra Bose, Huseyn Shaheed Suhrawardy, Kiran Shankar Roy, and Abul Hashim sought to counter partition proposals with the demand for a united and independent state of Bengal. Ideological visions for a "Greater Bengal" also included the regions of Assam and districts of Bihar.

Suhrawardy and Bose sought the formation of a coalition government between Bengali Congress and the Bengal Provincial Muslim League. Proponents of the plan urged the masses to reject communal divisions and uphold the vision of a united Bengal. In a press conference held in Delhi on 27 April 1947 Suhrawardy presented his plan for a united and independent Bengal and Abul Hashim issued a similar statement in Calcutta on 29 April. A few days later, Sarat Chandra Bose put forward his proposals for a "Sovereign Socialist Republic of Bengal." With the support of the British governor of the Bengal province, Frederick Burrows, Bengali leaders issued the formal proposal on 20 May.

The Muslim League and the Congress issued statements rejecting the notion of an independent Bengal on 28 May and 1 June respectively. The Hindu Mahasabha also agitated against the inclusion of Hindu-majority areas in a Muslim-majority Bengal, while Bengali Muslim leader Sir Khawaja Nazimuddin and Maulana Akram Khan sought the inclusion of the entire province of Bengal to Muslim Pakistan. Amidst aggravating Hindu-Muslim tensions, on 3 June British viceroy Lord Louis Mountbatten announced plans to partition India and consequently Punjab and Bengal on communal lines, burying the demand for an independent Bengal.

Partition of Bengal (1947)

In 1947, in line with the Partition of India, Bengal was partitioned between the Hindu majority west and Muslim majority East. East Bengal became part of the Islamic Republic of Pakistan while West Bengal became part of the Republic of India.

Bengali nationalism in East Pakistan (1947–1971) After the 19th century's Bengal Renaissance occurred in Bengal, it then was the four decades long Bengali Nationalist Movement that shook the region which included the Bengali language movement, the Bangladesh Liberation War and the creation of Bangladesh in 1971.

In the course of time, their works influenced the Bengali people to have a sense of separate identity. In 1905, as a result of the partition of Bengal, there were mass movements. During the time, Bangladesh national anthem "Amar Sonar Bangla" was composed. That event gathered Bengali people under same flag to keep Bengal province secure. Then, in 1947 the world saw an emergence of two countries Pakistan and India based on religious lines. The Bengali people accepted this division. After the birth of Pakistan East Bengali people expected that a change in fortunes. However, what they saw that new oppressors emerge in place of the old. Over the 24 years of political and financial exploitation followed, including the suppression of the Bengali Identity. Many protests, often led by students ensued. Some decided to take political action. On 23 June 1949 Awami Muslim League was established the leadership of Maulana Abdul Hamid Khan Bhashani. This party, led by Sheikh Mujibur Rahman played an influential role to create a new nation, Bangladesh ('The land of the Bengalis') in 1971 as a new country.Abul Mal Abdul Muhit, বাংলাদেশ: জাতিরাষ্ট্রের উদ্ভব, Dhaka: Sahitya Prakash, 2000

Factors behind the rise of Bengali nationalism in East Pakistan Language issue Right after the establishment of Pakistan, a controversy arose what would be state language of Pakistan. A movement is started in 1947 few months after the birth of Pakistan. Its main point was Bengali language. In the beginning, it was cultural movement, but gradually it took the form of a political movement. The language movement of 1948–1952, which was divided into two-stage movement. In 1948, it was restricted between educated and intellectual class and their demand was to make Bengali language as the state language. But in 1952 it's not only inadequate to the educated class, but also spread among the entire Bengali nation. At this stage, demand not only restricted to discrimination of language, but also it added in the social, political and cultural discrimination against the Bengalis. As a result, Language Movement brought Bengali nation on a single political platform and became aware of its own rights. In this way, the movement of the non-communal Bengali nationalist sentiment, the creation of new consciousness, the beginning of liberal outlook, the social change, the language movement took Bengalis into the new horizon. Language Movement motivates Bengali people to autonomy movement and motivates them in the struggle for independence to gain sovereign Bangladesh. So, it can be said that due to the language movement, the development of Bengali nationalism was created and helped to add a new country in world map called Bangladesh.Delwar Hossain and Abdul Kuddus Shikdar, The Emergence of Bangladesh. Dhaka: City Art Press, 2002

Cultural issue Pakistan's two wings were isolated by one thousand miles of enemy territory in India. This unique geographical position could pose a grave threat to the integrity of the country. There was nothing common between two wings with the exception of religion. In a word, all the common identity that tie a nation-state, physical bonding, common culture, common language, habits of life was absent in Pakistan.