Shamsuddin Ilyas Shah was the founder of the Ilyas Shahi dynasty in Bengal, which ruled from the 14th to the 15th century. He established his reign around 1342 CE after declaring independence from the Delhi Sultanate. His rule marked the beginning of a significant period in Bengal's history, characterized by cultural and economic growth. Under Ilyas Shah's leadership, Bengal became a prosperous region, with advancements in trade and agriculture. He is also known for promoting the Bengali language and culture, which laid the foundation for future developments in the area. His legacy continues to influence the history of Bengal.