Backbones of the Roman Empire
Roads, bridges, sewers, and aqueducts were the networks that connected the vast Roman Empire, which, in its heyday, encompassed an area of 5 million square kilometers. To keep it all together and make sure that the people were happy, roads and bridges were needed to facilitate trade, travel, and communication. Meanwhile, sewers and aqueducts took care of the more humdrum problems of life. Learn how they whisked away waste and brought running water to millions of residents—nearly 2,000 years ago!