January 16th is the anniversary of one of the most important historical events - the birth of the Roman Empire. This day, in 27 BC marks the day that Octavian was appointed the title Augustus, and became the first Emperor of Rome. Augustus ordered the gates of Janus to be closed, marking an end to the period of Civil War that had characterised Rome for decades before. Entering into a new era of peace, how did Augustus monopolise peace as a concept, and allow Rome to hold onto this new era and way of life across it's Empire? This week Tristan is joined by Hannah Cornwell, author of Pax and the Politics of Peace, to talk about this transitional period, it's reflections in art and monumental architecture, and ultimately, how the Roman Empire came to be.