
https://www.amazon.com/Roman-Revolution-Oxford-Paperbacks-No...
https://www.amazon.com/Roman-Revolution-Oxford-Paperbacks-No...
(Also posted as a top level comment.)
https://www.amazon.com/Roman-Revolution-Oxford-Paperbacks-No...
I'd really urge you to crack open an academic textbook on the subject. If you'd like to dive a little deeper, I'd recommend W.G. Runciman, "Capitalism Without Classes: The Case of Ancient Rome" (British Journal of Sociology), Wilfried Nippel, "Policing Rome" (Journal of Roman Studies), Peter Baehr, "Caesar and the Fading of the Roman World", Peter Brunt, "The Army and the Land in the Roman Revolution" and Douglass North, "Institutions, Institutional Change, and Economic Performance" which has a large stretch of summary of Roman political economy.