Final answer:
The island of Djerba is situated off the coast of Tunisia, a country that has a rich history including the ancient empire of Carthage.
Step-by-step explanation:
The island of Djerba is located off the coast of Tunisia. This North African country is known for its history and interaction with various civilizations over the centuries. Notably, Carthage, an ancient empire and one of Rome's main adversaries, was located in what is now Tunisia. The island itself is a part of Tunisia and situated on the Mediterranean Sea, close to the eastern shore of the country.