Answer:
The Tiber
Explanation:
The Tiber is the third-longest river in Italy and the longest in Central Italy, rising in the Apennine Mountains in Emilia-Romagna and flowing 406 kilometres through Tuscany, Umbria and Lazio, where it is joined by the river Aniene, to the Tyrrhenian Sea, between Ostia and Fiumicino. It drains a basin estimated at 17,375 square kilometres. The river has achieved lasting fame as the main watercourse of the city of Rome, which was founded on its eastern banks.
