Take a look at Rome's dark side, and learn about the institution of slavery.
Links:
References:
Bradley, Keith. Slavery and Society at Rome: Key Themes in Ancient History. Cambridge University Press, 1999.
Cornell, T.J. The Beginnings of Rome: Italy and Rome from the Bronze Age to the Punic Wars (1000-264BC). New York: Routledge, 1995.
Crawford, Michael. The Roman Republic, Second Edition. London: Fontana Press, 1992.
Forsythe, Gary. A Critical History of Early Rome: From Prehistory to the First Punic War. University of California Press, 2006.
romaninscriptionsofbritain.org