This informative site, divided into the different political phases of ancient Rome, describes the evolution of a small tribe growing to its peak, then experiencing its downfall.
This site explains that ancient-Roman history is usually divided into three main periods: before the rise of Rome, the Roman Republic, and the Roman Empire. The Imperial Period is usually divided according to who was emperor. Links to each topic are inclu
This article explains how the Roman form of government roughly parallels the modern American division of executive, legislative, and judicial branches.