The Arsacid Dynasty was a ruling dynasty of the ancient Parthian Empire, which existed from around 247 BCE to 224 CE. Founded by Arsaces I, the dynasty played a crucial role in the political landscape of ancient Persia, often challenging the Seleucid Empire for control over the region. The Arsacids are known for their unique blend of Persian and Hellenistic cultures. Under the Arsacid rule, the Parthian Empire expanded significantly, becoming a major power in the ancient world. The dynasty is recognized for its decentralized governance, allowing local rulers considerable autonomy. The Arsacid Dynasty eventually fell to the Sassanian Empire, marking the end of Parthian dominance.