Topic: Tell me a short, interesting fact about

One fascinating fact about the Roman Empire is that it used a complex system of roads known as the "Roman Road Network" which spanned over 80,000 kilometers (nearly 50,000 miles). This extensive network connected the empire's main cities and helped in facilitating trade, military maneuvers, and political communications. Some of these roads, such as the Appian Way in Italy, are still in use today.