Melvyn Bragg and guests discuss the 1851 Great Exhibition. “Its grandeur does not consist in one thing, but in the unique assemblage of all things. Whatever human industry has created you find there. It seems as if only magic could have gathered this mass of wealth from all the ends of the earth.” So wrote Charlotte Bronte in 1851 after visiting the Great Exhibition set in the vast Crystal Palace in London's Hyde Park. By the time the exhibition closed, one quarter of the entire British population had visited Crystal Palace, the first pre-fabricated building of its kind, to marvel at an extraordinary array of exhibits there. Amongst them were the biggest diamond in the world, a carriage drawn by kites, furniture made of coal, and a set of artificial teeth fitted with a swivel devise which allowed the user to yawn without displacing them. The Great Exhibition was huge in terms of the development of British manufacturing, the burgeoning of a global consumer market, the development of museums and the international standing of Britain culturally and technologically. It was also a triumph for Prince Albert and it turned a tidy profit. How did the Exhibition crystallise a particular moment in early Victorian Britain? In what way did it capitalise on the dawn of mass travel and greater levels of international co-operation? How did fears of revolutionary Europe define the policing and organisation of the event? And how far, if at all, did the Great Exhibition go in blurring class distinctions? With Jeremy Black, Professor of History at the University of Exeter; Hermione Hobhouse, Architectural Historian and Writer; Clive Emsley, Professor of History at the Open University.

Melvyn Bragg and guests discuss the Holy Roman Emperor Charlemagne and the Carolingian Renaissance. In 800 AD on Christmas Day in Rome, Pope Leo III proclaimed Charlemagne Emperor. According to the Frankish historian Einhard, Charlemagne would never have set foot in St Peter's that day if he had known that the Pope intended to crown him. But Charlemagne accepted his coronation with magnanimity. Regarded as the first of the Holy Roman Emperors, Charlemagne became a touchstone for legitimacy until the institution was brought to an end by Napoleon in 1806. A Frankish King who held more territory in Western Europe than any man since the Roman Emperor, Charlemagne's lands extended from the Atlantic to Vienna and from Northern Germany to Rome. His reign marked a period of enormous cultural and literary achievement. But at its foundation lay conquest, conversion at the point of a sword and a form of Christianity that was obsessed with sin, discipline and correction. How did Charlemagne become the most powerful man in Western Europe and how did he finance his conquests? Why was he able to draw Europe's most impressive scholars to his court? How successful was he in his quest to reform his church and educate the clergy? And can the Carolingian period really be called a Renaissance? With Matthew Innes, Professor of History at Birkbeck, University of London; Julia Smith, Edwards Professor of Medieval History at Glasgow University; Mary Garrison, Lecturer in History at the University of York

Melvyn Bragg and guests discuss Catherine the Great. In Moscow's Tretyakov Gallery hangs perhaps the most well-known picture of Russia's most well-known ruler. Dimitri Levitsky's 1780 'Portrait of Catherine the Great in the Justice Temple' depicts Catherine in the temple burning poppies at an altar, symbolising her sacrifice of self-interest for Russia. Law books and the scales of justice are at her feet, highlighting her respectful promotion of the rule of law. But menacingly, in the background an eagle crouches, suggesting the means to use brutal power where necessary. For an obscure, small-town German princess Catharine’s ambition was large - the transformation of semi-barbaric Russia into a model of the ideals of the French 18th century Enlightenment. How far was Catherine able to lead her country into full participation in the political and cultural life of Europe? Was she able to liberate the serfs? And should she be remembered as Russia's most civilised ruler or a megalomaniacal despot? With Janet Hartley, Professor of International History at the London School of Economics; Simon Dixon, Professor of Modern History at the University of Leeds; Tony Lentin, Professor of History at the Open University.

Melvyn Bragg and guests discuss the Abbasid Caliphs, dynastic rulers of the Islamic world from the mid eighth to the tenth century. They headed a Muslim empire that extended from Tunisia through Egypt, Syria, Arabia, and Persia to Uzbekistan and the frontiers of India. But unlike previous conquerors, the Abbasid Caliphs presided over a multicultural empire where conversion was a relatively peaceful business. As Vikings raided the shores of Britain, the Abbasids were developing sophisticated systems of government, administration and court etiquette. Their era saw the flowering of Arabic philosophy, mathematics and Persian literature. The Abbasids were responsible for patronising the translation of Classical Greek texts and transmitting them back to a Europe emerging from the Dark Ages. So who were the Abbasid Caliphs and how did they come to power? What was their cultural significance? What factors can account for their decline and fall? And why do they represent a Golden Age of Islamic civilisation? With Hugh Kennedy, Professor of History at the University of St Andrews; Robert Irwin, Senior Research Associate at the School of Oriental and African Studies; University of London; Amira Bennison, Senior Lecturer in Middle Eastern and Islamic Studies at the University of Cambridge.

Melvyn Bragg and guests discuss the importance of the oath in ancient Greece and Rome, The importance of oaths in the Classical world cannot be overstated. Kings, citizens, soldiers, litigants all swore oaths, inviting divine retribution if they proved false to their word. Oaths cemented peace treaties, they obliged the Athenian citizenry to protect their democracy, they guaranteed the loyalty of the Roman army to its Emperor and they underpinned the legal systems of Athens and Rome. And in Homer's epic poem, The Iliad, it is a broken oath to settle the dispute between Menelaus and Paris that leads the Greeks to storm Troy in pursuit of Helen. But how did the Classical world come to understand the oath? Why did oaths come to occupy such a central place in the political, social and legal life of the Athenian State? And what role did oath-making play in the expanding Roman Empire? With Alan Sommerstein , Professor of Greek at the University of Nottingham;Paul Cartledge , Professor of Greek History at the University of Cambridge; Mary Beard , Professor in Classics at the University of Cambridge

Melvyn Bragg and guests discuss the Peterloo Massacre in 1819, a defining moment of its age. In 1819 Percy Bysshe Shelley wrote: 'I met Murder on the way He had a mask like Castlereagh Very smooth he looked, yet grim; Seven blood-hounds followed him: All were fat; and well they might Be in admirable plight, For one by one, and two by two, He tossed them human hearts to chew Which from his wide cloak he drew.' As Foreign Secretary, Castlereagh had successfully co-ordinated European opposition to Napoleon, but at home he had repressed the Reform movement, and popular opinion held him responsible for the Peterloo Massacre of peaceful demonstrators in 1819. Shelley's epic poem, The Mask of Anarchy, reflected the widespread public outrage and condemnation of the government's role in the massacre. Why did a peaceful and orderly meeting of men, women and children in St Peter's Field, Manchester turn into a blood bath? How were the stirrings of radicalism in the wake of the Napoleonic Wars dealt with by the British establishment? And what role did the Peterloo Massacre play in bringing about the Great Reform Act of 1832? With Jeremy Black, Professor of History at the University of Exeter; Sarah Richardson, Senior Lecturer in History at the University of Warwick; Clive Emsley, Professor of History at the Open University.

Melvyn Bragg and guests discuss the religious orders of the Dominicans and the Franciscans, known as the Blackfriars and Greyfriars. "Just as it is better to light up others than to shine alone, it is better to share the fruits of one's contemplation with others than to contemplate in solitude". Thus St Thomas Aquinas described his vocation, not only as a teacher, but also as a Dominican friar and philosopher at the University of Paris. In the 13th century, the religious orders of the Dominicans and the Franciscans were a great force for change in Catholic Europe. They thrived in the emerging towns and cities of the High Middle Ages, leading crusades and changing the way the Church dealt with heretics. They were the evangelists who transformed the Church's preaching of the Christian message to the people. On top of all this, these two orders were also responsible for reconciling Classical and Christian philosophy; their studies of Aristotle paved the way for the Renaissance. They also managed to change the curriculum at the universities of Paris and Oxford. But the Blackfriars and the Greyfriars did not come from the great monasteries of the time; they started out as itinerant preachers surviving upon the charity of the faithful. So how did these two orders come to dominate the spiritual and academic life of the 13th century, and how did they manage to accumulate such huge wealth while professing allegiance to lives of poverty? With Henrietta Leyser, medieval historian and Fellow of St Peter's College, Oxford; Alexander Murray, medieval historian and Emeritus Fellow of University College, Oxford; Anthony Kenny, philosopher and former Master of Balliol College, Oxford.

Melvyn Bragg and guests discuss the Field of the Cloth of Gold, an extraordinary international party. In the spring of 1520 six thousand Englishmen and women packed their bags and followed their King across the sea to France. They weren't part of an invasion force but were attendants to King Henry VIII and travelling to take part in the greatest and most conspicuous display of wealth and culture that Europe had ever seen. They were met by Francis I of France and six thousand French noblemen and servants on English soil in Northern France and erected their temporary palaces, elaborate tents, jousting pavilions and golden fountains spewing forth red, white and claret wine in the Val D'Or. For just over two weeks they created a temporary town the size of Norwich, England's second city, on the 'Camp du Drap D'Or', or Field of the Cloth of Gold. What drove the French and the English to create such an extraordinary event? What did the two sides do when they got there, and what - if anything - was achieved? With Steven Gunn, Lecturer in Modern History at Oxford University; John Guy, Fellow of Clare College, University of Cambridge; Penny Roberts, Senior Lecturer in History at the University of Warwick.

Melvyn Bragg and guests discuss the reign of terror during the French Revolution. On Monday September 10th 1792 The Times of London carried a story covering events in revolutionary France: "The streets of Paris, strewed with the carcases of the mangled victims, are become so familiar to the sight, that they are passed by and trod on without any particular notice. The mob think no more of killing a fellow-creature, who is not even an object of suspicion, than wanton boys would of killing a cat or a dog". These were the infamous September Massacres when Parisian mobs killed thousands of suspected royalists and set the scene for the events to come, when Madame La Guillotine took centre stage and The Terror ruled in France. But how did the French Revolution descend into such extremes of violence? Who or what drove The Terror? And was it really an aberration of the revolutionary cause or the moment when it truly expressed itself? With Mike Broers, Lecturer in Modern History at the University of Oxford and Fellow of Lady Margaret Hall; Rebecca Spang, Lecturer in Modern History at University College London; Tim Blanning, Professor of Modern European History at the University of Cambridge.

Melvyn Bragg and guests discuss the link between archaeology and imperialism. In 1842 a young English adventurer called Austen Henry Layard set out to excavate what he hoped were the remains of the biblical city of Nineveh in Mesopotamia. On arrival he discovered that the local French consul, Paul Emile Botta, was already hard at work. Across the Middle East and in Egypt, archaeologists, antiquarians and adventurers were exploring cities older than the Bible and shipping spectacular monuments down the Nile and the Tigris to burgeoning European museums.What was it about the ancient cultures of Egypt and Mesopotamia that so gripped the 19th century imagination? How did nationalism and imperialism affect the search for the ancient past and how did archaeology evolve from its adventuresome, even reckless, origins into the science of artefacts we know today?With Tim Champion, Professor of Archaeology, University of Southampton; Richard Parkinson, Assistant Keeper in the Department of Ancient Egypt and Sudan at the British Museum; Eleanor Robson, Lecturer in the History and Philosophy of Science at Cambridge University and a Fellow of All Souls College, Oxford.