The Roman State and its bureaucracy were shaken by the shift of its state organization. Out of a republican state system, with Caezar's death, Rome adapted an Imperial system under the leadership of the young Emperor Augustus. Taking over the Roman Rulership, Augustus took the hearts of the Roman Populus with his wise foreign and domestic policies, just like the hearts of the narrow-minded Senate, which secured him many honorable titles which no ruler before him had. His influence, as well the influence of his successors, on the province of Illyria, was enormous. Apart from subjugating the Illyrian tribes, Augustus and his successors encouraged the growth and development of cities along the whole province. One of those cities was Salona, which transformed itself from a Graeco-Illyrian trade colony into the capital of the province of Dalmatia. With the status of a capital city, Salona flourished and achieved significant economic, political, urban, social and cultural development, a gift from the Roman state that she open-handedly accepted. Thanks to the members of the Julian-Claudian dynasty, the old city core – Urbs Vetus, experienced its metamorphosis. With the improvement of roads, upgrade of the city walls and gates, and with the construction of a theater and forum complex – the urban development of Salona during the early Roman Imperial era enters its peak. Also, the stonemason trade of the Salonitan area didn’t remain deprived of Roman encouragement. Reflecting on the Greek examples, and learned to create their own, the local stonemasons reached an enviable stonemasonry achievement. From tombstones, portraits, statues, and reliefs, they perfected the Roman technique and style and came close to the skills of the Roman grandmasters. The period of the early Roman Empire influenced Salona in many ways, which is why the period has left a significant mark in the history of the city, which must not be neglected.