The Romans usually let the existing culture and society survive as long as the peoples religion didn’t contradict the Roman gods and the taxes flowed. Even wit

The Romans usually let the existing culture and society survive as long as the peoples religion didn’t contradict the Roman gods and the taxes flowed. Even without Rome, history from that era is not well known. Having architecture and literature spread widely across a continent like the romans will last a lot longer than wooden buildings and an oral tradition of a small localised tribe.