How did the unwritten constitution of the Roman Republic work?

The constitution of the Roman Republic was an evolving set of uncodified norms, customs, and written laws rather than a single document. It operated through three main branches: the popular assemblies, the Senate, and elected magistrates, which balanced and checked one another's powers. Over nearly five hundred years, political development was heavily driven by the struggle between the patrician aristocracy and ordinary plebeian citizens. Ultimately, political violence and elite fracturing in the late republic collapsed these institutions, paving the way for Augustus and the empire.

What we know

• The constitution of the Roman Republic consisted of uncodified norms and customs combined with various written laws. [2]
• The republican governance was divided into three primary branches: the assemblies, the Senate, and the magistrates. [2]
• Constitutional evolution was driven primarily by the ongoing political struggle between the patrician aristocracy and plebeians. [4]
• The Conflict of the Orders eventually granted plebeian citizens equal political rights and created the tribunate and plebeian assembly. [2]

Where to go next

• what caused itHow did the Conflict of the Orders reshape Roman politics?
• what followedWhat led to the collapse of the Roman Republic?
• how it workedHow did the system of checks and balances function among the three branches?
• whenWhat were the five historical phases of the Roman Republic's constitution?
• compared withHow does the ancient constitution compare to the short-lived 1849 Roman Republic constitution?
• an unexpected connectionHow did a 19th-century European state mirror the ancient Roman triumvirate?The short-lived 1849 Roman Republic was led by a triumvirate directly reflecting the governmental form used during the first century BC crisis of the ancient republic.

Sources

• [1]Constitution of the Roman Republic (Wikidata Q2576746) · CC0 1.0
• [2]Constitution of the Roman Republic · CC BY-SA 4.0
• [3]Roman Republic (1849–1850) · CC BY-SA 4.0
• [4]History of the Constitution of the Roman Republic · CC BY-SA 4.0
• [5]Roman Constitution · CC BY-SA 4.0