The Roman Republic was established after the overthrow of the monarchy. The Senate, composed of aristocratic elders, became the most powerful political body, gaining influence over lawmaking, military affairs, and executive appointments. Citizens were divided between the ruling patrician class and the majority plebeian commoners, who struggled for civil rights and political representation. The Republic established several branches of government, including consuls as executive leaders and commanders-in-chief, tribunes elected to advocate for plebeians, and assemblies for legislation. Over time, the Republic developed a complex system of elected offices and laws that impacted the governance of Rome and modern democratic societies.