The Romans and the Mongols were two of the most successful empires in human history and both of them left many legacies and conquered huge amounts of land but the Roman empire was more successful. The Roman empire was established, as a city, on a hilltop in Italy but conquered more land and gained more power in time. It had supreme military power and had conquered countries bigger than their own starting from Italy itself and the continuing too Spain,Byzantium,Greece...etc. Although they did conquer a lot of land, they also focused on sustainable development(something the Mongols did not do a lot) and left us many legacies. The Roman empire lasted from 201BC to 476AD. The Mongolian empire was the largest land based empire in the world. It conquered modern day cities like Iraq,Iran,China,India...etc. It started from Mongolia but grew bigger and bigger. Although the Mongolians had such a great empire, they used to be nomads and had a very nomadic lifestyle. The Mongolian empire was pretty big but it only lasted from 1205AD to 1386AD. To go into more detail why the Romans were better than the Mongols, read the following.
The Romans left legacies that were better than the Mongols. They invented things like aqueducts, bricks, cement, central heating, air-conditioners and mines. These inventions have helped make our lives easier. Even though they were all invented a long time ago, we still use them in todays time. Yes, the air-conditioners and heaters we use today are more advanced but they were all developed from the inventions of the Romans. The Mongols could not accomplish such feats because they did not focus on education and only like fighting. Another great thing the Romans developed was the language Latin. Although Latin is a dead language and nobody speaks it anymore, many of our modern day languages are based on Latin including English! Some of the other languages adapted