Rome was in Italy, which is between the eastern and western basins of the Mediterranean. This made travel in either of them easier. The narrow strip of water between Sicily and Africa also made easier to control this passage between these two parts of this sea.
No, the Mediterranean Sea and the Atlantic Ocean are connected by a narrow body of water called the Straits of Gibraltar, and the Mediterranean Sea and the Red Sea (an arm of the Indian Ocean) are connected by a man made channel called the Suez Canal. Prior to the construction of the Suez Canal and if the Straits of Gibraltar were to close such that the Spanish and Moroccan borders were fused together, then the Mediterranean Sea would be landlocked since there are no other significant outlets that lead to other large bodies of water. The Mediterranean Sea does connect with the Black Sea through a narrow body of water called the Dardenelles, but the Black Sea is also a landlocked body of water and therefore doesn't change the status of the Mediterranean Sea.
The Suez Canal :)
Sup doe
surface water, ground water, and man-made lakes and dams.
The Suez Canal
The Mediterranean Sea borders Spain to the southeast. This border was very helpful to Spain hundreds of years ago, as it made trade with Greece, Turkey, and other parts of Europe and Asia possible.
Italy's location in the centre of the Mediterranean Sea, between it western and eastern basins, meant that the empire first grew around this sea. The Romans conquered the whole of the Mediterranean and called it mare nostrum, 'our sea.' It also influenced the fact that Gaul was the first land beyond the Mediterranean they conquered. They expanded northwards from their possession along the Mediterranean in southern Gaul.
The never was/is a Roman peninsula. Rome was/is in the Italian peninsula. Italy has lies in between the western basin and the eastern basin of the Mediterranean. This made it easier for the Romans to expand into both the western and the eastern Mediterranean and to control both basins of the Mediterranean.
Italy lies at the centre of the Mediterranean, between its eastern and western basins. This made it easier to control the western and eastern Mediterranean at the same time.
BUBBLING
Basically, it was part way in between the area of the Roman/Gothic region, the Far East Asian powers, and the African powers. It was strategically located on the Mediterranean Sea, connecting it by water to other major empires.