The Open University: "Imperial Rome and Ostia"
Watch these 15 podcasts to learn about how Rome was built and how supplies entered and exited the city. This series of podcasts uses images of Roman ruins and scale models to illustrate the architecture and urban development of the city of Rome. Through its port city of Ostia, Rome imported vast quantities of food and other commodities and exported manufactured goods across the Roman Empire. Roman industry often relied on cheap slave labor to supply large urban markets with goods.
Click https://www.open.edu/openlearn/history-the-arts/history/imperial-rome-and-ostia link to open resource.