Events

On 16 January 27 BC the Senate confirmed Octavian's settlement of the previous month, granting him the title Augustus and conferring extraordinary powers while maintaining the formal continuity of the Republic. The arrangement created the role of princeps — first citizen — and gave Rome its first emperor in all but name. The Principate as Augustus designed it lasted three centuries.

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A fire that began in the merchant district around the Circus Maximus burned for six days and destroyed two-thirds of the city. The emperor Nero, despite later legend, was at Antium when it broke out and returned to organize relief; he then made the city's Christians a scapegoat for the disaster, crucifying members of the community in his gardens. The persecution gave Christianity its first Roman martyrs.

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Joint declaration by Constantine, augustus of the West, and Licinius, augustus of the East, granting toleration to Christianity throughout the Roman Empire and returning previously confiscated church property. The edict ended three centuries of intermittent persecution and put the imperial government in the position of supporter rather than enemy of the Christian church — a shift that decisively shaped European history.

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On 4 September 476 the Germanic general Odoacer deposed the teenage emperor Romulus Augustulus in Ravenna and sent the imperial regalia to Constantinople with a message that the Western Empire no longer needed an emperor of its own. The conventional date for the fall of the Western Roman Empire, though contemporaries scarcely noticed: the institution had been hollowing out for a century.

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On Christmas Day 800, Pope Leo III crowned Charlemagne emperor of the Romans in St. Peter's Basilica. The coronation revived the imperial dignity in the Latin West for the first time since 476 and bound the Frankish royal line to Rome and to the papacy — relationships that would define European politics for the next thousand years.

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Three-way partition of the Carolingian Empire among the surviving sons of Louis the Pious after three years of civil war. Lothair I retained the imperial title and a long, narrow Middle Francia stretching from the Low Countries through Burgundy into Italy. Louis the German received East Francia, the kernel of medieval Germany; Charles the Bald received West Francia, the kernel of France. The borders sketched in 843 shaped European politics for the next millennium.

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Two months after Eleanor's annulment from Louis VII of France, she married Henry, Duke of Normandy and Count of Anjou, in Poitiers on 18 May 1152. The match brought her vast duchy under Henry's control and, when he became king of England two years later, created the Angevin Empire — a French king's vassal who now controlled more of France than the king himself.

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The decisive battle of medieval France. On 27 July 1214 Philip II Augustus crushed a coalition of the Holy Roman Emperor Otto IV, Count Ferdinand of Flanders, and the English under John, ending the Plantagenet attempt to recover the continental holdings John had lost a decade earlier. Bouvines confirmed France as the dominant power of Latin Europe and broke John's standing at home — the Magna Carta crisis followed within a year.

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On 15 June 1215, in a meadow at Runnymede, John of England sealed the Great Charter under duress from an alliance of rebellious barons. The document compelled the king to respect certain feudal rights, established that no free man could be imprisoned without the lawful judgment of his peers, and bound the crown to the rule of law. John repudiated it within weeks and Pope Innocent III voided it; later kings reissued it, and it became the foundational text of English constitutional liberty.

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After a twelve-day siege, the Mongol army of Hulagu Khan stormed Baghdad on 10 February 1258. They sacked the city for a week, butchering perhaps two hundred thousand inhabitants and throwing the books of the great libraries into the Tigris until, the chronicles say, the river ran black with ink. The last Abbasid caliph, al-Musta'sim, was rolled in a carpet and trampled to death by horses, ending the caliphate that had ruled the Islamic east for half a millennium.

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Kublai Khan proclaimed the Yuan dynasty on 18 December 1271, adopting a Chinese-style reign name and presenting his Mongol regime to his subjects as the legitimate successor to the Chinese imperial tradition. The Southern Song dynasty held out for another eight years before its final collapse at Yamen, completing the first foreign conquest of all China.

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On 26 August 1346, Edward III's English army of roughly twelve thousand destroyed a French force perhaps three times its size at Crécy in Ponthieu. The Welsh and English longbowmen broke wave after wave of French knightly charges; the sixteen-year-old Black Prince commanded the vanguard. The battle announced English military supremacy of the early Hundred Years' War and dethroned the heavily armored knight as Europe's dominant battlefield weapon.

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On 25 October 1415, Henry V's exhausted and outnumbered English army won the most lopsided victory of the Hundred Years' War. Trapped between the woods of Agincourt and the marshy Tramecourt valley, the heavily armored French knights bogged in mud while English longbow arrows fell among them at a thousand-volley-per-minute rate. Casualty estimates vary wildly but the French lost much of their nobility; the English lost perhaps a hundred dead.

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Thirty-two years of intermittent civil war between the Lancastrian and Yorkist branches of the Plantagenet dynasty, triggered by the recurring incapacity of Henry VI and the rival claim of Richard, Duke of York. The conflict produced six battles in the 1450s–1460s, the murderous reign of Edward IV, the disappearance of his sons in the Tower, and the final defeat of Richard III at Bosworth in 1485. Resolved by the marriage of Henry VII and Elizabeth of York the following year.

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On 22 August 1485, Henry Tudor's army of perhaps five thousand met Richard III's larger royal force on Ambion Hill in Leicestershire. The crucial defection of the Stanleys mid-battle, and Richard's reckless personal charge in an attempt to kill Henry himself, decided the outcome. Richard III became the last English king to die in battle; Henry VII was crowned on the field. The Plantagenet dynasty ended on the same hour the Tudor dynasty began.

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On 18 January 1486 Henry Tudor married Elizabeth of York, eldest surviving daughter of Edward IV, in Westminster Abbey. The match fused the warring Lancastrian and Yorkist branches of the Plantagenet house, ending the Wars of the Roses by dynastic union rather than continued bloodshed. Their grandson Henry VIII would be the result; through their granddaughter Margaret, the union also transmitted the English crown to the Stuart line a century later.

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A two-year campaign by Hernán Cortés and roughly six hundred Spaniards, aided by smallpox and tens of thousands of indigenous allies who hated Mexica rule, destroyed the Aztec Empire. Moctezuma II received Cortés peacefully in Tenochtitlan in November 1519 and was held captive there; he died in disputed circumstances during the Mexica uprising of 1520. The eighty-day Spanish siege ended on 13 August 1521 with the capture of the last tlatoani, Cuauhtémoc.

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The Act of Supremacy, passed by Parliament in November 1534, declared Henry VIII supreme head of the Church of England and severed jurisdictional ties with Rome. The break originated in Henry's refusal to accept Pope Clement VII's denial of his annulment from Catherine of Aragon and his determination to marry Anne Boleyn; it produced the dissolution of the English monasteries, the seizure of perhaps a fifth of the kingdom's wealth, and the foundation of the Anglican church.

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On 25 July 1554 Mary Tudor married her cousin Philip of Spain, son of the Holy Roman Emperor Charles V, in Winchester Cathedral. The match was deeply unpopular in England — a Catholic prince of the rising Habsburg superpower marrying the reigning queen on terms widely seen as compromising English sovereignty. The marriage produced no children; on Mary's death Philip lost his English title and pursued the throne through war against her Protestant successor Elizabeth.

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Between 1554 and 1556 Charles V, exhausted by four decades of universal war, partitioned the empire he had inherited intact. His son Philip received Spain, the Indies, the Italian possessions, and the Low Countries; his brother Ferdinand received Austria, Bohemia, Hungary, and ultimately the imperial title. The split divided the Habsburgs into Spanish and Austrian branches that would remain cousin powers for the next century and a half. Charles retired to a monastery in Yuste and died there in 1558.

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On 8 February 1587, after nineteen years of English captivity and three botched plots against Elizabeth I in her name, Mary Stuart was beheaded at Fotheringhay Castle. Elizabeth signed the warrant under enormous Privy Council pressure and later professed bitter regret. Mary's son James VI of Scotland — destined to inherit the English throne sixteen years later — protested the execution but did not break with England over it.

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Philip II of Spain assembled the Grande y Felicísima Armada — 130 ships, 30,000 men — to invade Elizabethan England, depose its Protestant queen, and reclaim the English throne for Catholicism. English long-range gunnery, fireships at Calais, and the great Atlantic gales drove the fleet north around Scotland and Ireland; perhaps half the ships and most of the men never returned to Spain. The defeat ended Spain's century-long dominance of European warfare.

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Elizabeth I died childless on 24 March 1603 with the words "my cousin of Scotland" reportedly her last designation of an heir. Her great-grandnephew James VI of Scotland — descended from Henry VII through his daughter Margaret Tudor — inherited the English and Irish crowns the same day, uniting the three British kingdoms under a single monarch for the first time. Each kept its own parliament, courts, and church.

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On 23 May 1618 a delegation of Bohemian Protestant nobles threw two imperial regents and their secretary out of a third-story window of Prague Castle. All three survived the seventy-foot fall, landing in a dung heap. The act was the opening provocation of the Thirty Years' War — Europe's longest, most destructive religious conflict, which killed perhaps a quarter of the population of Germany.

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The series of treaties signed at Münster and Osnabrück in October 1648 ended the Thirty Years' War in the Empire and the Eighty Years' War between Spain and the Dutch Republic. The settlement recognized the sovereignty of the German princes, granted formal independence to the Dutch and the Swiss, and established the principle of cuius regio, eius religio (whose realm, his religion) on a durable basis. Conventionally cited as the foundation of the modern European state system.

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On 30 January 1649, Charles I was beheaded on a scaffold erected outside the Banqueting House in Whitehall — the only English king ever publicly executed by his own subjects. Defeated in two civil wars, refused parliamentary compromise, and convicted of high treason by a tribunal of fifty-nine commissioners (the Rump Parliament had voted away the House of Lords specifically to bring him to trial), he wore two shirts to avoid shivering on the cold morning lest the crowd mistake it for fear.

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An invitation from seven English peers brought William of Orange and a Dutch army ashore at Torbay on 5 November 1688. James II, lacking confidence in his own troops and forces, fled to France within weeks. Parliament declared the throne vacant by James's flight and offered it jointly to his daughter Mary and her husband William, on conditions later codified in the Bill of Rights. The settlement fixed parliamentary supremacy as the operating constitution of England.

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Parallel Acts passed by the parliaments of England and Scotland in 1706 and 1707 dissolved both legislatures and created a single Kingdom of Great Britain with a unified parliament at Westminster. Scotland retained its distinct legal system, established church, and educational institutions. The union was politically driven (Scotland's financial collapse after the Darien venture, English fears of a separate Stuart restoration) and deeply unpopular in Scotland for generations.

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Charles VI, last male Habsburg in the senior line, issued an edict on 19 April 1713 declaring that the Habsburg hereditary lands were indivisible and could pass to a female heir if no male existed. He spent the next twenty-seven years securing the recognition of every European court for the eventual succession of his daughter Maria Theresa. Most of those guarantees were violated within months of his death, plunging Europe into the War of the Austrian Succession.

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The collapse of the Habsburg monarchy at the end of the First World War. By October 1918 the constituent nationalities of Austria-Hungary were declaring independent states; on 11 November Emperor Karl I issued a proclamation renouncing participation in state affairs, though he never formally abdicated. The empire dissolved into the new Austria, Hungary, Czechoslovakia, Yugoslavia, and parts of Poland, Italy, and Romania — ending six centuries of Habsburg rule.

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