Final answer:
The flourishment of the Campanian region is best depicted by the prosperity of cities like Florence and Pisa during the late Middle Ages, marked by a significant demographic growth, urbanization, and economic development, despite the rural nature of the adjacent southern areas.
Step-by-step explanation:
A source that shows the flourishment of the Campanian region can be observed through historic accounts detailing the expansion and prosperity of city-states in the area during the late Middle Ages. The Campanian region, specifically cities like Florence and Pisa, thrived with characteristics unique to their regional and civic qualities. Economic strength derived from these cities' Roman heritage, evident in their roads, bridges, walls, and cemeteries, and was further magnified during the demographic explosion from the 11th to the 13th centuries. This era witnessed substantial migration from the countryside to urban areas and a corresponding agrarian revolution paired with a blossoming commerce that fueled urbanization and wealth accumulation.
Despite the prosperity of the north, it is important to note that South of Rome, with the exception of Naples, areas like Southern Italy and Sicily remained largely rural and agricultural, less touched by the industrial and economic growth that marked the northern counterparts. Nevertheless, the Regolini-Galassi tomb from the city of Cerveteri illustrates the new, extraordinary wealth that transformed local cultures, symbolizing the affluence and cultural development of the era.