Topic: Tell me a short, interesting fact about

One fascinating fact about the Roman Empire is that it had a system of road construction and maintenance named the "Viae Romanae." These roads stretched over 80,000 kilometers (50,000 miles) across the empire and were paved with volcanic ash and gravel. They facilitated trade, military movements, and communication across vast distances, played a crucial role in the Roman conquest, and still influence the modern road network in Europe.