Sassanid Empire

The Sassanid Empire (224-651 CE) was a significant Iranian civilization that succeeded the Parthian Empire. It was known for its achievements in art, culture, and architecture, as well as its advancements in science and medicine. The Sassanids promoted Zoroastrianism as a state religion and maintained a complex administration. They were a major rival to the Roman and Byzantine Empires, notably in military conflicts. The empire fell to the Muslim conquests, which led to the spread of Islam in Persia. The Sassanid legacy influenced later Persian culture and governance.