اردشیر اول was the founder of the ساسانیان dynasty in ancient Persia, ruling from 224 to 241 CE. He established a powerful empire that succeeded the پارسیان and expanded its territory significantly. His reign marked a revival of Persian culture and Zoroastrianism, which became the state religion. Under اردشیر اول, the Sasanian Empire developed a centralized government and a strong military. He is known for his military campaigns against the رومیان and for promoting trade and infrastructure. His legacy laid the foundation for one of the most influential empires in history, which lasted until the Islamic conquest in the 7th century.