What did the sasanid and byzantine empires have in common?

The Sasanian and Byzantine Empires shared several similarities, notably their status as dominant regional powers in the late ancient world, both emerging from the remnants of earlier empires. They were characterized by strong centralized governments, complex bureaucracies, and distinct social hierarchies. Additionally, both empires engaged in prolonged military conflicts and territorial disputes, particularly over Persia and the Levant. Culturally, they also influenced one another through trade, religion, and art, reflecting the interconnectedness of their societies.