Roman society was hierarchical.The evolution of the Constitution of the Roman Republic was heavily influenced by the struggle between the patricians, Rome's land-holding aristocracy, who traced their ancestry back to the early history of the Roman kingdom, and the plebeians, the far more numerous citizen-commoners. Over time, the laws that gave patricians exclusive rights to Rome's highest offices were repealed or weakened, and leading plebeian families became full members of the aristocracy. The leaders of the Republic developed a strong tradition and morality requiring public service and patronage in peace and war, making military and political success inextricably linked.