Roman art developed over a long period, from the Roman Republic to the Roman Empire, and reflected the political power, cultural diversity, and practical outlook of Roman civilization. It was deeply influenced by the artistic traditions of the Etruscans and the Greeks, yet it evolved into a distinctive style characterized by realism, engineering excellence, and the celebration of imperial authority. One of the most important features of Roman art was realism. Roman sculptors created highly detailed portraits that accurately represented the physical appearance and age of individuals. Unlike the idealized Greek sculptures, Roman portraiture often emphasized wrinkles, scars, and facial expressions, reflecting the Roman value of wisdom, experience, and dignity. Portrait busts of emperors, senators, and military leaders served both