Q. Which nation's overseas territory is "Mayotte", an Indian Ocean island?
Answer: France
Notes: Mayotte, an Indian Ocean island, is an overseas department and territorial region of France. It is a part of the Comoros Archipelago, located in the Mozambique Channel of the Indian Ocean, off the coast of southeast Africa. it lies between Madagascar and Mozambique. During the Comoros Independence, people of Mayotte decided to remain politically part of France through the referendum of 1974.