The heir to the throne believes improved education about the darkest days of Empire will help to heal divisions within the UK and the Commonwealth, and help both to move forward. Aides have said he is on a mission to lis ten, learn and acknowledge the legacy of the trade in which Britain shipped 3.1 million Africans to its colonies between 1640 and 1807, before campaigning aggressively to halt it here and around the world. Charles, 73, has suggested the UK should create a national day to commemorate the victims of slavery, similar to Holocaust Memorial Day. A Clarence House...