word related to Aegean tifos "still water", Greek phytonym τύφη a kind of swamp and river bank weed (Typha angustifolia), Iberian hydronyms Tibilis, Tebro and Numidian Aquae Tibilitanae. Yet another etymology is from *dubri-, water, considered by Alessio as Sicel, whence the form Θύβρις later Tiberis. This root *dubri- is widespread in Western Europe e.g. Dover, Portus Dubris. History According to legend, the city of Rome was founded in 753 BC on the banks of the Tiber about from the sea at Ostia. Tiber Island, in the center of the river between Trastevere and the ancient city center, was the site of an important ancient ford and was later bridged. Legend says Rome's founders, the twin brothers Romulus and Remus, were abandoned on its waters, where they were rescued by the she-wolf, Lupa. The river marked the boundary between the lands of the Etruscans to the west, the Sabines to the east and the Latins to the south. Benito Mussolini, born in Romagna, adjusted the boundary between Tuscany and Emilia-Romagna, so that the springs of the Tiber would lie in Romagna. The Tiber was critically important to Roman trade and commerce, as ships could reach as far as upriver; some evidence indicates that it was used to ship grain from the Val Teverina as long ago as the fifth century BC. It was later used to ship stone, timber, and foodstuffs to Rome. During the Punic Wars of the third century BC, the harbour at Ostia became a key naval base. It later became Rome's most important port, where wheat, olive oil, and wine were imported from Rome's colonies around the Mediterranean. Wharves were also built along the riverside in Rome itself, lining the riverbanks around the Campus Martius area. The Romans connected the river with a sewer system (the Cloaca Maxima) and with an underground network of tunnels and other channels, to bring its water into the middle of the city. Wealthy Romans had garden-parks or horti on the banks of the river in Rome through the first century BC. These may have been sold and developed about a century later. The heavy sedimentation of the river made maintaining Ostia difficult, prompting the emperors Claudius and Trajan to establish a new port on the Fiumicino in the first century AD. They built a new road, the Via Portuensis, to connect Rome with Fiumicino, leaving the city by Porta Portese