Why did livy believe that the tiber river and mediterranean sea were beneficial to rome

Livy believed that the Tiber river and Mediterranean sea were beneficial to Rome because

A the river was very important means of transportation. It was used to cargo produce from the inland regions.

The sea too was important for commerce making shipments from abroad possible without the danger of enabling the influx of battle fleets from their enemies.

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Tiber River. The most important river in central Italy. It runs some 400 kilometers through a long valley running from Tuscany through Umbria, Latium, past Rome, to the Tyrannize Sea at Ostia (literally, the "mouths" of the river). The river had a positive as well as negative impact on the development of Rome.

The Mediterranean Sea was important to the Roman Empire in that it was a vital trade link with other parts of the Empire, especially the Middle East and North Africa ... The Romans referred to it as "their sea" and would not allow competing empires to flourish on it, such as the Greeks and Egyptians.