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Ardashir I was the founder of the last pre-Islamic Persian dynasty, the Sassanid dynasty, which began in 224 CE and ended with the Arab conquest in 651. At its peak, the Sassanid Empire stretched from the Arabian peninsula to India. Ardashir established Zoroastrianism as the state religion and strengthened it by collecting sacred texts and empowering the priestly caste. In the latter years of his reign, he invaded what nearby Parthian kingdom allied with Persia’s great rival to the west, Rome? Discuss
Source: The Free Dictionary