Bengal Sultanate in the context of Interregnum

The Bengal Subah (Bengali: সুবাহ বাংলা, Persian: صوبه بنگاله), also referred to as Mughal Bengal and Bengal State (after 1717), was the largest subdivision of the Mughal Empire encompassing much of the Bengal region, which includes modern-day Bangladesh, the Indian state of West Bengal, and some parts of the present-day Indian states of Bihar (from 1733), Jharkhand and Odisha between the 16th and 18th centuries. The province was established following the dissolution of the Bengal Sultanate, a major trading nation in the world, when the region was absorbed into the Mughal Empire. Bengal was the wealthiest region in the Indian subcontinent.

Aurangzeb (r. 1658–1707) described Bengal Subah as 'the paradise of Nations' and the "Golden Age of Bengal". It alone accounted for 40% of Dutch imports from Asia. The eastern part of Bengal was globally prominent in industries such as textile manufacturing and shipbuilding, and it was a major exporter of silk and cotton textiles, steel, saltpeter, and agricultural and industrial produce in the world. The region was also the basis of the Anglo-Bengal War.

The Delhi Sultanate or the Sultanate of Delhi was a late medieval empire primarily based in Delhi that stretched over large parts of the Indian subcontinent for more than three centuries. The sultanate was established in 1206 in the former Ghurid territories in India. The sultanate's history is generally divided into five periods: Mamluk (1206–1290), Khalji (1290–1320), Tughlaq (1320–1414), Sayyid (1414–1451), and Lodi (1451–1526). It covered large swaths of territory in modern-day India, Pakistan, Bangladesh, as well as some parts of southern Nepal.

The foundation of the Sultanate was established by the Ghurid conqueror Muhammad Ghori, who routed the Rajput Confederacy, led by Ajmer ruler Prithviraj Chauhan, in 1192 near Tarain in a reversal of an earlier battle. As a successor to the Ghurid dynasty, the Delhi Sultanate was originally one of several principalities ruled by the Turkic slave-generals of Muhammad Ghori, including Taj al-Din Yildiz, Qutb ud-Din Aibak, Bahauddin Tughril and Nasir ad-Din Qabacha, that had inherited and divided the Ghurid territories amongst themselves. Khalji and Tughlaq rule ushered a new wave of rapid and continual Muslim conquests deep into South India. The sultanate finally reached the peak of its geographical reach during the Tughlaq dynasty, occupying most of the Indian subcontinent under Muhammad bin Tughluq. A major political transformation occurred across North India, triggered by the Central Asian king Timur's devastating raid on Delhi in 1398, followed soon afterwards by the re-emergence of rival Hindu powers such as Vijayanagara Empire and Kingdom of Mewar asserting independence, and new Muslim sultanates such as the Bengal and Bahmani Sultanates breaking off. In 1526, Timurid ruler Babur invaded northern India and conquered the Sultanate, leading to its succession by the Mughal Empire.

Indo-Persian culture refers to a cultural synthesis present on the Indian subcontinent. It is characterised by the absorption or integration of Persian aspects into the various cultures of modern-day republics of Bangladesh, India, and Pakistan. The earliest introduction of Persian influence and culture to the subcontinent was by various Muslim Turko-Persian rulers, such as the 11th-century Sultan Mahmud Ghaznavi, rapidly pushed for the heavy Persianization of conquered territories in northwestern Indian subcontinent, where Islamic influence was also firmly established. This socio-cultural synthesis arose steadily through the Delhi Sultanate from the 13th to 16th centuries, and the Mughal Empire from then onwards until the 19th century. Various dynasties of Turkic, Iranian and local Indian origin patronized the Persian language and contributed to the development of a Persian culture in India. The Delhi Sultanate developed their own cultural and political identity which built upon Persian and Indic languages, literature and arts, which formed the basis of an Indo-Muslim civilization.

Persian was the official language of most Muslim dynasties in the Indian subcontinent, such as the Delhi Sultanate, the Kashmir Sultanate, the Bengal Sultanate, the Mughal Empire and their successor states, and the Sikh Empire. It was also the dominant cultured language of poetry and literature. Many of the Sultans and nobility in the Sultanate period were Persianised Turks from Central Asia who spoke Turkic languages as their mother tongues. The Mughals were also culturally Persianised Central Asians (of Turko-Mongol origin on their paternal side), but spoke Chagatai Turkic as their first language at the beginning, before eventually adopting Persian. Persian became the preferred language of the Muslim elite of northern India. Muzaffar Alam, a noted scholar of Mughal and Indo-Persian history, suggests that Persian became the official lingua franca of the Mughal Empire under Akbar for various political and social factors due to its non-sectarian and fluid nature. The influence of these languages led to a vernacular called Hindustani that is the direct ancestor language of today's Hindi–Urdu varieties.

The spread of Islam spans almost 1,400 years. The early Muslim conquests that occurred following the death of Muhammad in 632 CE led to the creation of the caliphates, expanding over a vast geographical area; conversion to Islam was boosted by Arab Muslim forces expanding over vast territories and building imperial structures over time. Most of the significant expansion occurred during the reign of the rāshidūn ("rightly-guided") caliphs from 632 to 661 CE, which were the first four successors of Muhammad. These early caliphates, coupled with Muslim economics and trading, the Islamic Golden Age, and the age of the Islamic gunpowder empires, resulted in Islam's spread outwards from Mecca towards the Indian, Atlantic, and Pacific Oceans and the creation of the Muslim world. The Islamic conquests, which culminated in the Arab empire being established across three continents (Asia, Africa, and Europe), enriched the Muslim world, achieving the economic preconditions for the emergence of this institution owing to the emphasis attached to Islamic teachings. Trade played an important role in the spread of Islam in some parts of the world, such as Indonesia. During the early centuries of Islamic rule, conversions in the Middle East were mainly individual or small-scale. While mass conversions were favored for spreading Islam beyond Muslim lands, policies within Muslim territories typically aimed for individual conversions to weaken non-Muslim communities. However, there were exceptions, like the forced mass conversion of the Samaritans.

Muslim dynasties were soon established and subsequent empires such as those of the Umayyads, Abbasids, Mamluks, Seljukids, and the Ayyubids were among some of the largest and most powerful in the world. The Ajuran and Adal Sultanates, and the wealthy Mali Empire, in North Africa, the Delhi, Deccan, and Bengal Sultanates, and Mughal and Durrani Empires, and Kingdom of Mysore and Nizam of Hyderabad in the Indian subcontinent, the Ghaznavids, Ghurids, Samanids in Persia, Timurids, and the Ottoman Empire in Anatolia significantly changed the course of history. The people of the Islamic world created numerous sophisticated centers of culture and science with far-reaching mercantile networks, travelers, scientists, hunters, mathematicians, physicians, and philosophers, all contributing to the Islamic Golden Age. The Timurid Renaissance and the Islamic expansion in South and East Asia fostered cosmopolitan and eclectic Muslim cultures in the Indian subcontinent, Malaysia, Indonesia and China. The Ottoman Empire, which controlled much of the Middle East and North Africa in the early modern period, also did not officially endorse mass conversions, but evidence suggests they occurred, particularly in the Balkans, often to evade the jizya tax. Similarly, Christian sources mention requests for mass conversions to Islam, such as in Cyprus, where Ottoman authorities refused, fearing economic repercussions.

The history of Islam is believed, by most historians, to have originated with Muhammad's mission in Mecca and Medina at the start of the 7th century CE, although Muslims regard this time as a return to the original faith passed down by the Abrahamic prophets, such as Adam, Noah, Abraham, Moses, David, Solomon, and Jesus, with the submission (Islām) to the will of God. According to the traditional account, the Islamic prophet Muhammad began receiving what Muslims consider to be divine revelations in 610 CE, calling for submission to the one God, preparation for the imminent Last Judgement, and charity for the poor and needy. As Muhammad's message began to attract followers (the ṣaḥāba) he also met with increasing hostility and persecution from Meccan elites. In 622 CE Muhammad migrated to the city of Yathrib (now known as Medina), where he began to unify the tribes of Arabia under Islam, returning to Mecca to take control in 630 and order the destruction of all pagan idols. By the time Muhammad died c. 11 AH (632 CE), almost all the tribes of the Arabian Peninsula had converted to Islam, but disagreement broke out over who would succeed him as leader of the Muslim community during the Rashidun Caliphate.

The early Muslim conquests were responsible for the spread of Islam. By the 8th century CE, the Umayyad Caliphate extended from al-Andalus in the west to the Indus River in the east. Polities such as those ruled by the Umayyad and Abbasid caliphates (in the Middle East and later in Spain and Southern Italy), the Fatimids, Seljuks, Ayyubids, and Mamluks were among the most influential powers in the world. Highly Persianized empires built by the Samanids, Ghaznavids, and Ghurids significantly contributed to technological and administrative developments. The Islamic Golden Age gave rise to many centers of culture and science and produced notable polymaths, astronomers, mathematicians, physicians, and philosophers during the Middle Ages. By the early 13th century, the Delhi Sultanate conquered the northern Indian subcontinent, while Turkic dynasties like the Sultanate of Rum and Artuqids conquered much of Anatolia from the Byzantine Empire throughout the 11th and 12th centuries. In the 13th and 14th centuries, destructive Mongol invasions, along with the loss of population due to the Black Death, greatly weakened the traditional centers of the Muslim world, stretching from Persia to Egypt, but saw the emergence of the Timurid Renaissance and major economic powers such as the Mali Empire in West Africa and the Bengal Sultanate in South Asia. Following the deportation and enslavement of the Muslim Moors from the Emirate of Sicily and elsewhere in southern Italy, the Islamic Iberia was gradually conquered by Christian forces during the Reconquista. Nonetheless, in the early modern period, the gunpowder empires—the Ottomans, Timurids, Mughals, and Safavids—emerged as world powers.

Bangladesh, officially the People's Republic of Bangladesh, is a country in South Asia. It is the eighth-most populous country in the world and among the most densely populated with a population of over 171 million within an area of 148,460 square kilometres (57,320 sq mi). Bangladesh shares land borders with India to the north, west, and east, and Myanmar to the southeast. It has a coastline along the Bay of Bengal to its south and is separated from Bhutan and Nepal by the Siliguri Corridor, and from China by the Indian state of Sikkim to its north. Dhaka, the capital and largest city, is the nation's political, financial, and cultural centre. Chittagong is the second-largest city and the busiest port of the country.

The territory of modern Bangladesh was a stronghold of many Hindu and Buddhist dynasties in ancient history. Following the Muslim conquest in 1204, the region saw Sultanate and Mughal rule. During the Mughal period, particularly under the Bengal Subah, the region emerged as one of the most prosperous and commercially active parts of the world, known for its thriving textile industry and agricultural productivity. The Battle of Plassey in 1757 marked the beginning of British colonial rule for the following two centuries. In the aftermath of the Partition of India in 1947, East Bengal became the eastern and most populous wing of the newly formed Dominion of Pakistan and was later renamed to East Pakistan.

The Muslim conquests on the Indian subcontinent mainly took place between the 13th and the 18th centuries, establishing the Indo-Muslim period. Earlier Muslim conquests on the Indian subcontinent include the invasions which started in the northwestern Indian subcontinent (modern-day Pakistan), especially the Umayyad campaigns in India. Later during the 8th century, Mahmud of Ghazni, sultan of the Ghaznavid Empire, invaded vast parts of Punjab and Gujarat during the 11th century. After the capture of Lahore and the end of the Ghaznavids, the Ghurid ruler Muhammad of Ghor laid the foundation of Muslim rule in India in 1192. In 1202, Muhammad Bakhtiyar Khalji led the Muslim conquest of Bengal, marking the easternmost expansion of Islam at the time.

The Ghurid Empire soon evolved into the Delhi Sultanate in 1206, ruled by Qutb ud-Din Aibak, the founder of the Mamluk dynasty. With the Delhi Sultanate established, Islam was spread across most parts of the Indian subcontinent. In the 14th century, the Khalji dynasty under Alauddin Khalji, extended Muslim rule southwards to Gujarat, Rajasthan, and the Deccan. The successor Tughlaq dynasty temporarily expanded its territorial reach to Tamil Nadu. The disintegration of the Delhi Sultanate, capped by Timur's invasion in 1398, caused several Muslim sultanates and dynasties to emerge across the Indian subcontinent, such as the Gujarat Sultanate, Malwa Sultanate, Bahmani Sultanate, Jaunpur Sultanate, Madurai Sultanate, and the Bengal Sultanate. Some of these, however, were followed by Hindu reconquests and resistance from the native powers and states, such as the Telugu Nayakas, Vijayanagara, and Rajput states under the Kingdom of Mewar.

Bengal (/bɛnˈɡɔːl/ ben-GAWL) is a geographical, ethnolinguistic, historically geopolitical region in South Asia, located north of the Bay of Bengal. Today, it is politically divided between the sovereign state of Bangladesh, the Indian state of West Bengal, and Karimganj district in the Indian state of Assam.

The ancient Vanga Kingdom is widely regarded as the namesake of the Bengal region. The Bengali calendar dates back to the reign of Shashanka in the 7th century CE. The Pala Empire was founded in Bengal during the 8th century. The Sena dynasty and Deva dynasty ruled between the 11th and 13th centuries. By the 14th century, Bengal was absorbed by Muslim conquests in the Indian subcontinent. An independent Bengal Sultanate was formed and became the eastern frontier of the Islamic world. During this period, Bengal's rule and influence spread to Assam, Arakan, Tripura, Bihar, and Odisha (formerly- Orissa). Bengal Subah later emerged as a prosperous part of the Mughal Empire.

West Bengal is a state in the eastern portion of India. It is situated along the Bay of Bengal. It had a population of over 91 million inhabitants within an area of 88,752 km (34,267 sq mi) as of 2011. The population estimate as of 2023 is 99,723,000. West Bengal is the fourth-most populous and thirteenth-largest state by area in India, as well as the eighth-most populous country subdivision of the world. As a 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 Jharkhand, Odisha, 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 Gauda 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 annexed into the Bengal Presidency by the British East India Company after the Battle of Buxar in 1764. From 1772 to 1911, Calcutta was the capital of all of East India Company's territories and then the capital of the entirety of India after the establishment of the Viceroyalty. From 1912 to India's Independence in 1947, it was the capital of the Bengal Province.

The Kashmir Sultanate, historically Latinised as the Sultanate of Cashmere and officially known as the State of Kashmir, was a medieval kingdom established in the early 14th century, primarily in the Kashmir Valley, found in the northern part of the Indian subcontinent. The Sultanate was founded by Rinchan Shah, a Ladakhi noble who converted from Buddhism to Islam. The Sultanate was briefly interrupted by the Loharas until Shah Mir, a councillor of Rinchan, overthrew the Loharas and started his own dynasty. The Shah Mirs ruled from 1339 until they were deposed by the Chak warlords and nobles in 1561. The Chaks continued to rule the Sultanate until the Mughal conquest in 1586 and their surrender in 1589.

The Kashmir Sultanate was a Muslim monarchy comprising Kashmiri, Turco–Persian, Kohistani, Dardic, & Ladakhi elites. A Ladakhi Buddhist, Rinchan Bhoti, converted to Islam and served as the first Sultan. He was followed by two prominent dynasties: The Shah Mirs and the Chaks. A Baihaqi Sayyid, Mubarak Baihaqi, briefly ruled over Sultanate after overthrowing Yousuf Chak in 1579. Due to its diversity, the kingdom lived and worked by the principles of Kashmiriyat, which existed harmoniously within the cultural and religious pluralism of the Sultanate. Although Sanskrit and Persian were preferred as the official, diplomatic, court, and state language, Kashmiri still had a large impact on social and communal work, later being granted official status. The economical centre, as well as the vital mint city of the Sultanate, Srinagar, served as the capital for the majority of its lifespan while the diverse city of Varmul, the highly rich and cultivated land of Suyyapur, the hilly areas of Anantnag, and the surrounding valleys of Neelum were the notable commercial and residential districts. The Sultanate carried out major trading relations, having establishments in Bihar, Tibet, Nepal, Peking, Bhutan, Khurasan, and Turkestan, whereas Punjab and Bengal were considered her greatest trading and industrial partners. Besides the Delhi Sultanate, Kashmir, along with Bengal, Gujarat, and Sindh, were considered strong political and martial allies, even interfering in one another's internal problems.

Shāh (/ʃɑː/; Persian: شاه [ˈʃɒːɦ] ) is a royal title meaning 'king' in Persian. Though chiefly associated with the monarchs of Iran, it was also used to refer to the leaders of numerous Persianate societies, such as the Ottoman Empire, the Khanate of Bukhara and the Emirate of Bukhara, the Mughal Empire, the Bengal Sultanate, and various Afghan dynasties, as well as among Gurkhas. With regard to Iranian history, in particular, each ruling monarch was not seen simply as the head of the concurrent dynasty and state, but as the successor to a long line of royalty beginning with the original Persian Empire of Cyrus the Great. To this end, he was more emphatically known as the Shāhanshāh (شاهنشاه [ˌʃɒːhænˈʃɒːɦ]), meaning 'King of Kings', since the Achaemenid dynasty. A roughly equivalent title is Pādishāh (پادشاه; lit. 'Master King'), which was most widespread during the Muslim period in the Indian subcontinent.