King Nadir Shah was a Persian ruler who reigned from 1736 to 1747. He is best known for his military conquests, particularly the invasion of India in 1739, where he captured the city of Delhi and looted its treasures, including the famous Koh-i-Noor diamond. His reign marked a significant period in Persian history, characterized by both military success and internal strife. Nadir Shah's rule was marked by his efforts to consolidate power and restore the Persian Empire's glory. However, his later years were plagued by tyranny and unrest, leading to his assassination in 1747. His legacy remains controversial, as he is remembered for both his achievements and his brutal methods.