Topic: Tell me a short, interesting fact about

One interesting fact about the Roman Empire is that it employed a complex system of roads, known as the "Roman road network". These roads connected major cities and military outposts across the empire, spanning a length of approximately 80,000 kilometers (50,000 miles). They were engineered to be straight, wide, and durable, with many still in use today. In Roman times, these roads enabled efficient mobility of soldiers, traders, and travelers throughout the empire, and greatly facilitated the expansion and administration of the Roman Empire.