Roman expression of dominion over the Mediterranean Sea
In the Roman Empire, Mare Nostrum () was a term that referred to the Mediterranean Sea. Meaning "Our Sea" in Latin, it denoted the body of water in the context of borders and policy; Rome remains the only state in history to have controlled the entire Mediterranean coast. The phrase would have been pronounced [ˈma.rɛ ˈnɔs.t̪rʊ̃ː] in Classical Latin, while it is pronounced [ˈmaː.rɛ ˈnɔs.t̪rum] in Ecclesiastical Latin.
https://en.wikipedia.org/wiki/Mare_Nostrum