After gaining independence from Pakistan in the 1971 War of Independence, the country emerged on the world map as an independent state. The eastern part of the Indian subcontinent borders the country with the main part of the ancient and historical region, where civilization has been going on for more than four thousand years, even in the Calcolithic era. In 1342 Shamsuddin Ilyas Shah became the Sultan of Lakhnauti. He was ambitious. He established his dominion over the whole of Bengal, invaded Nepal and Orissa and conquered Trihut (North Bihar), Champaran, Gorakhpur and Kashi. Bihar was under the sultanate of Delhi at that time and Ilyas Shah became disgusted with the sultans of Delhi by invading Bihar. In response to the invasion of part of Delhi by Ilyas Shah, Sultan Feroz Shah Tughlaq of Delhi invaded Bengal in November 1353. The history of this region is closely related to the history of Bengal and the history of India. The early history of the area is the legacy of the Indian Empire, the history of internal conflicts and the conflict between Hindus and Buddhists. After the thirteenth century, when Muslim explorers, such as Turks, Iranians, Mughals, etc., came to this country, Islam gradually became influential. Later Muslim rulers strengthened the process of transformation by building mosques and madras as.
The exact origin of the word Bengali or Bangala is unknown. The word Banga probably originated from Bengal, a Dravidian group living in the region around 1000 BC. Other sources suggest that the word Banga originated from the Austronesian sun god "Bonga". According to the Mahabharata, Puranas and the Harivansh, King Bali had a Kshetraj son named Banga who established the kingdom of Bengal1] The first Bengali word is mentioned in the Nesari inscription of Rashtrakuta king Govinda III where Dharmapala is mentioned as the king of Bengal. Sultan Ilyas Shah took the title of "Shah-i-Bangalah" and since then Bengal has been called Bangalah in all Muslim sources.
Shamsuddin Ilyas Shah served in his early life under the Sultanate of Delhi. But due to some problems he fled to Bengal and started working in Bengal under the then provincial governor of Delhi Ijazuddin Yahya. When Ijazuddin Yahya died in 1338, Shamsuddin Ilyas Shah seized power in Satgaon and declared it free from Delhi. In 1342, he defeated Sultan Alauddin Ali Shah of Lakhnaiti in a battle that lasted for almost two years. He ascended the throne of Lakhnauti and started the Ilias Shahi dynasty.
Ikhtiyar Uddin, son of Fakhruddin, was the ruler of Ghazi Shah when he invaded Sonargaon, the capital of East Bengal, in 1352 AD. Ilias Shah expelled him and captured SonargaonIn this way he merged the three provinces of Bengal, namely Sonarga and Lakhnauti, and became the ruler of the whole of Bengal. The portion of Kamrup that belonged to the kingdom of Ilyas Shah is understood to have been a coin minted in the mint of Kamrup in the first year of the reign of his son Sikandar Shah. Thus his territory extended from Assam to Varanasi. He also conquered Trihut in 1344. Then the self-contradiction of Kar Trihut inspired Ilyas Shah to conquer Trihut. He also fought in Nepal in 1350Shambhunath's inscriptions and Nepal dynasties mention Ilyas Shah's invasion of Nepal. But his campaign is the epitome of his extraordinary command. One by one he conquered Orissa, Champaran and GorakhpurIlias Shah is also said to be the creator of the first Bengali nationalism in the history of medieval Muslim Bengal. He felt the need to form a united nation to strengthen himself against the authority of DelhiAlthough he conquered Bengal as the ruler of Lakhnauti, he combined the two Bengali-speaking lands to create a larger land. His foresight is evident in the establishment of this unbroken geographical state unity and in uniting the Bengalis. It was during his reign that the Bengalis emerged as a nation. From this time onwards the inhabitants of all parts of Bengal became known as Bengalis and the countries outside Bengal also called them Bengalis. Ilias Shah declared himself as the national leader of the Bengalis by receiving the titles of 'Shah e Bangalah' and 'Shah e Bangali'. For this reason he is called the creator of Bengali nationalism.
In 1350 AD he conducted an adventurous expedition in the Terai region of Nepal. No Muslim forces have been able to enter the area before. He advanced as far as the capital Kathmandu, destroyed the Swayambhunath temple and returned with a large fortune. But he did not annex any part of Nepal to his kingdom.
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