See also "How the British Empire and U.S. Department of Defense Murdered an Island Paradise" ... "the story of the Chagos Islands, a paradise founded by former slaves that was wiped out by the British empire so they could lease it to the U.S. as an air base" [1]
France ceded Mauritius and its outlying islands to the UK. When the UK granted Mauritius independence, it held back the Chagos Islands and forcibly deported all their inhabitants, leading to the status quo until today.