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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this isnt

a causal relation between two events exists if the occurrence of the first causes the other. the first event is called the cause and the second event is called the effect. a correlation between two variables does not imply causation.

explanation: