Britain's Kate, Duchess of Cambridge, foreground centre, sits with Prince William, Camilla, the Duchess of Cornwall and Prince Charles, front row, Prince Andrew, background right, Meghan, the Duchess of Sussex and Prince Harry, at the Commonwealth Service at Westminster Abbey in London, Monday, March 11, 2019. Commonwealth Day has a special significance this year, as 2019 marks the 70th anniversary of the modern Commonwealth - a global network of 53 countries and almost 2.4 billion people, a third of the world's population, of whom 60 percent are under 30 years old. (AP Photo/Kirsty Wigglesworth, Pool)