Australia likes to think it has no history of slavery, but two-thirds of Australia's colonial governors had links to the slave economy of the British Empire. A new book, Legacies of British Slavery in Australia and New Zealand reveals how slave money shaped the colonies. Plus, veteran architecture critic Paul Goldberger examines what Donald Trump's building agenda says about his politics, power and legacy.Guests: Professor Zoe Laidlaw, historian, University of Melbourne, co-editor with Sally Lydon of 'Legacies of British Slavery in Australia and NZ'Paul Goldberger, former architecture critic for The New York Times, and The New Yorker, and the author of 'Why Architecture Matters.'