Melvyn Bragg and guests discuss how, between the 16th and 18th centuries, Europe was dominated by an economic way of thinking called mercantilism. The key idea was that exports should be as high as possible and imports minimised. For more than 300 years, almost every ruler and political thinker was a mercantilist. Eventually, economists including Adam Smith, in his ground-breaking work of 1776 The Wealth of Nations, declared that mercantilism was a flawed concept and it became discredited. However, a mercantilist economic approach can still be found in modern times and today’s politicians sometimes still use rhetoric related to mercantilism. WithD’Maris Coffman Professor in Economics and Finance of the Built Environment at University College London Craig Muldrew Professor of Social and Economic History at the University of Cambridge and a Member of Queens’ Collegeand Helen Paul, Lecturer in Economics and Economic History at the University of Southampton.Producer Luke Mulhall

Melvyn Bragg and guests discuss megaliths - huge stones placed in the landscape, often visually striking and highly prominent. Such stone monuments in Britain and Ireland mostly date from the Neolithic period, and the most ancient are up to 6,000 years old. In recent decades, scientific advances have enabled archaeologists to learn a large amount about megalithic structures and the people who built them, but much about these stones remains unknown and mysterious. With Vicki Cummings Professor of Neolithic Archaeology at the University of Central LancashireJulian Thomas Professor of Archaeology at the University of Manchester and Susan Greaney Lecturer in Archaeology at the University of Exeter.

On 21 May 1838 an estimated 150,000 people assembled on Glasgow Green for a mass demonstration. There they witnessed the launch of the People’s Charter, a list of demands for political reform. The changes they called for included voting by secret ballot, equal-sized constituencies and, most importantly, that all men should have the vote. The Chartists, as they came to be known, were the first national mass working-class movement. In the decade that followed, they collected six million signatures for their Petitions to Parliament: all were rejected, but their campaign had a significant and lasting impact. With Joan Allen Visiting Fellow in History at Newcastle University and Chair of the Society for the Study of Labour HistoryEmma Griffin Professor of Modern British History at the University of East Anglia and President of the Royal Historical Society and Robert Saunders Reader in Modern British History at Queen Mary, University of London.The image above shows a Chartist mass meeting on Kennington Common in London in April 1848.

Melvyn Bragg and guests discuss the pioneering Danish astronomer Tycho Brahe (1546 – 1601) whose charts offered an unprecedented level of accuracy.In 1572 Brahe's observations of a new star challenged the idea, inherited from Aristotle, that the heavens were unchanging. He went on to create his own observatory complex on the Danish island of Hven, and there, working before the invention of the telescope, he developed innovative instruments and gathered a team of assistants, taking a highly systematic approach to observation. A second, smaller source of renown was his metal prosthetic nose, which he needed after a serious injury sustained in a duel. The image above shows Brahe aged 40, from the Atlas Major by Johann Blaeu. With Ole Grell Emeritus Professor in Early Modern History at the Open University Adam Mosley Associate Professor of History at Swansea University and Emma Perkins Affiliate Scholar in the Department of History and Philosophy of Science at the University of Cambridge.

Melvyn Bragg and guests discuss the stench from the River Thames in the hot summer of 1858 and how it appalled and terrified Londoners living and working beside it, including those in the new Houses of Parliament which were still under construction. There had been an outbreak of cholera a few years before in which tens of thousands had died, and a popular theory held that foul smells were linked to diseases. The source of the problem was that London's sewage, once carted off to fertilise fields had recently, thanks to the modern flushing systems, started to flow into the river and, thanks to the ebb and flow of the tides, was staying there and warming in the summer sun. The engineer Joseph Bazalgette was given the task to build huge new sewers to intercept the waste, a vast network, so changing the look of London and helping ensure there were no further cholera outbreaks from contaminated water.The image above is from Punch, July 10th 1858 and it has this caption: The 'Silent Highway'-Man. "Your Money or your Life!"WithRosemary Ashton Emeritus Quain Professor of English Language and Literature at University College LondonStephen Halliday Author of ‘The Great Stink of London: Sir Joseph Bazalgette and the Cleansing of the Victorian Metropolis’AndPaul Dobraszczyk Lecturer at the Bartlett School of Architecture at University College London

Melvyn Bragg and guests discuss the momentum behind rebellion in Ireland in 1798, the people behind the rebellion and the impact over the next few years and after. Amid wider unrest, the United Irishmen set the rebellion on its way, inspired by the French and American revolutionaries and their pursuit of liberty. When it broke out in May the United Irishmen had an estimated two hundred thousand members, Catholic and Protestant, and the prospect of a French invasion fleet to back them. Crucially for the prospects of success, some of those members were British spies who exposed the plans and the military were largely ready - though not in Wexford where the scale of rebellion was much greater. The fighting was initially fierce and brutal and marked with sectarianism but had largely been suppressed by the time the French arrived in August to declare a short-lived republic. The consequences of the rebellion were to be far reaching, not least in the passing of Acts of Union in 1800.The image above is of Theobald Wolfe Tone (1763 - 1798), prominent member of the United IrishmenWith Ian McBride Foster Professor of Irish History at Hertford College, University of OxfordCatriona Kennedy Senior Lecturer in Modern History at the University of YorkAnd Liam Chambers Head of Department and Senior Lecturer in History at Mary Immaculate College, LimerickProducer: Simon Tillotson

Melvyn Bragg and guests discuss the speeches that became a byword for fierce attacks on political opponents. It was in the 4th century BC, in Athens, that Demosthenes delivered these speeches against the tyrant Philip II of Macedon, father of Alexander the Great, when Philip appeared a growing threat to Athens and its allies and Demosthenes feared his fellow citizens were set on appeasement. In what became known as The Philippics, Demosthenes tried to persuade Athenians to act against Macedon before it was too late; eventually he succeeded in stirring them, even if the Macedonians later prevailed. For these speeches prompting resistance, Demosthenes became famous as one of the Athenian democracy’s greatest freedom fighters. Later, in Rome, Cicero's attacks on Mark Antony were styled on Demosthenes and these too became known as Philippics.The image above is painted on the dome of the library of the National Assembly, Paris and is by Eugene Delacroix (1798-1863). It depicts Demosthenes haranguing the waves of the sea as a way of strengthening his voice for his speeches.With Paul Cartledge A. G. Leventis Senior Research Fellow at Clare College, University of CambridgeKathryn Tempest Reader in Latin Literature and Roman History at the University of RoehamptonAndJon Hesk Reader in Greek and Classical Studies at the University of St AndrewsProducer: Simon Tillotson

Melvyn Bragg and guests discuss the rebellion that broke out in Jamaica on 11th October 1865 when Paul Bogle (1822-65) led a protest march from Stony Gut to the courthouse in nearby Morant Bay. There were many grounds for grievance that day and soon anger turned to bloodshed. Although the British had abolished slavery 30 years before, the plantation owners were still dominant and the conditions for the majority of people on Jamaica were poor. The British governor suppressed this rebellion brutally and soon people in Jamaica lost what right they had to rule themselves. Some in Britain, like Charles Dickens, supported the governor's actions while others, like Charles Darwin, wanted him tried for murder. The image above is from a Jamaican $2 banknote, printed after Paul Bogle became a National Hero in 1969.With Matthew J Smith Professor of History and Director of the Centre for the Study of the Legacies of British Slavery at University College LondonDiana Paton The William Robertson Professor of History at the University of EdinburghAndLawrence Goldman Emeritus Fellow in History at St Peter’s College, University of OxfordProducer: Simon Tillotson

Melvyn Bragg and guests discuss the military order founded around 1119, twenty years after the Crusaders captured Jerusalem. For almost 200 years the Knights Templar were a notable fighting force and financial power in the Crusader States and Western Europe. Their mission was to protect pilgrims in the Holy Land, and they became extremely wealthy yet, as the crusader grip on Jerusalem slipped, their political fortune declined steeply. They were to be persecuted out of existence, with their last grand master burned at the stake in Paris in 1314, and that sudden end has contributed to the strength of the legends that have grown up around them.WithHelen Nicholson Professor of Medieval History at Cardiff UniversityMike Carr Lecturer in Late Medieval History at the University of EdinburghAnd Jonathan Phillips Professor of Crusading History at Royal Holloway, University of LondonProducer: Simon Tillotson

Melvyn Bragg and guests discuss the largest and arguably the most astonishing religious structure on Earth, built for Suryavarman II in the 12th Century in modern-day Cambodia. It is said to have more stone in it than the Great Pyramid of Giza, and much of the surface is intricately carved and remarkably well preserved. For the last 900 years Angkor Wat has been a centre of religion, whether Hinduism, Buddhism or Animism or a combination of those, and a source of wonder to Cambodians and visitors from around the world.WithPiphal Heng Postdoctoral scholar at the Cotsen Institute and the Programme for Early Modern Southeast Asia at UCLAAshley Thompson Hiram W Woodward Chair of Southeast Asian Art at SOAS University of LondonAndSimon Warrack A stone conservator who has worked extensively at Angkor WatProducer: Simon Tillotson