Q. Which two countries border the Tyrrhenian Sea? Answer:
Italy and France
Notes: The Tyrrhenian Sea forms a part and branch of the Mediterranean Sea, located between the western coast of Italy and islands of French island Corsica and Italian island Sardinia located to the west. The Italian island Sicily is located to the south of the sea. France, through Corsica Island, and Italy form the basin countries of the Tyrrhenian Sea.