Q. Which are the only two countries that are involved in the ownership and administration of "Mascarene Islands"?
Answer: Mauritius and France
Notes: Reunion Islands is an overseas department and region of France, which is located in the Indian Ocean. Reunion Islands is one of the 18 regions of France and is an integral part of the French Republic with the same status as Metropolitan France. Reunion Island shares maritime boundaries with Madagascar and Mauritius. Reunion Islands is located to the east of Madagascar and south-west of Mauritius. Reunion Islands form part of the Mascarene Islands or Mascarenhas Archipelago, which is a group of islands located in the Indian Ocean east of Madagascar consisting of the islands of Mauritius and the French overseas region Reunion Island.