Topic: Tell me a short, interesting fact about

One interesting fact about the Roman Empire is that it was the first in history to use a system of marked roads for rapid communication and transport. Known as the "Viae Romanae," these roads spanned thousands of miles across the empire and were made with durable materials like crushed lime, volcanic ash, and gravel. Mile markers were placed every Roman mile (1,479 meters or 1,609 yards), making them useful for both armies and travelers.