The islands of Alderney, Herm, Jethou, Brecqhou, Burhou, Lihou and Sark are administered directly by a government based where?
The island of Guernsey These and other islands (including Guernsey) make up the Crown dependency known as Guernsey.
The Marquesas Islands in the southern Pacific Ocean are a group of volcanic islands and an overseas collectivity of what country?