All successful ancient civilizations have one key geographic feature in common, water. They are located by a body of water such as a lake, sea, or ocean or a river. In this case, Roman civilization was located by the Tiber River. What is different about the Roman’s is their civilization on hills. Due to being right next to the river a lot of Roman land would be considered damp marsh areas which caused people to live on top of hilly areas to avoid the marshes. Eventually the marshes were drained so the Romans could utilize the river for trade. This river is important to Roman expansion and acculturation over time from traveling and trade. Through the years many of these hills were worn down or gone from man-mind adjustments or constant rebuilding of buildings and societies on the hills.
Source: Giovanni Milani-Santarpia and Maria Luz Vargas-Villalba, Roman Hills Map, MariaMilani, http://www.mariamilani.com/ancient_rome/Ancient%20Rome%20Geography_.htm (Accessed November 19, 2017).