Blog

Blogs, essays, updates, and occasional notes that sit alongside The Butterfly Effect.

Portrait of Kublai Khan from the Yuan imperial album

Xanadu

May 5, 2026 By Andy Barca

On 5 May 1260, Kublai Khan was proclaimed Great Khan at Shangdu - the place Coleridge would later imagine as Xanadu. He went on to conquer all of China, found the Yuan dynasty, and invent fiat money. He also started the process that ended his grandfather's empire.

Portrait of Tipu Sultan, ruler of Mysore

India Is Ours

May 4, 2026 By Andy Barca

On 4 May 1799, British and allied forces stormed Seringapatam and killed Tipu Sultan, the Tiger of Mysore. General Harris stood over the body and said 'Now India is ours.' It was not the most important battle of the conquest - it was a typical one.

Stanisław August Poniatowski, King of Poland, in coronation robes

First in Europe, Gone in Four Years

May 3, 2026 By Andy Barca

On 3 May 1791, the Sejm of the Polish-Lithuanian Commonwealth adopted Europe's first modern constitution. It abolished the parliamentary chaos that had paralysed Poland for over a century, declared that power derives from the will of the people, and established a functioning constitutional monarchy. Russia invaded within a year.

Title page of the 1611 first edition of the King James Bible

The Book He Ordered

May 2, 2026 By Andy Barca

On 2 May 1611, Robert Barker printed the King James Bible - commissioned by James I to replace the subversive Geneva Bible with a clean, crown-endorsed text. He got what he asked for. The Puritans took it to New England.

Contemporary illustration of the Haymarket Square riot, Chicago, 4 May 1886

Eight Hours for What We Will

May 1, 2026 By Andy Barca

On 1st May 1886, up to half a million American workers went on strike demanding an eight-hour day. Three days later, a bomb exploded at a rally in Chicago, and the United States gave the world International Workers' Day — then declined to observe it.

Portrait of James Monroe, U.S. envoy in the Louisiana Purchase negotiations

Three Cents an Acre

Apr 30, 2026 By Andy Barca

On 30 April 1803, the United States purchased 828,000 square miles from Napoleon for $15 million — about three cents an acre. Jefferson's envoys had gone to Paris to buy a city. They came back with a continent.

Portrait of Castilian commander Pedro de Vera

The Laboratory

Apr 29, 2026 By Andy Barca

On 29th April 1483, the last Guanche resistance on Gran Canaria surrendered to the Kingdom of Castile. The conquest of the island was not just another colonial acquisition — it was the template. Every method applied to the Americas nine years later had already been tested here.

Portrait photograph of Benito Mussolini

The Last Disguise

Apr 28, 2026 By Andy Barca

On 28 April 1945, Benito Mussolini was shot at a roadside near Lake Como and hung upside down from a petrol station in Milan. The man who invented fascism ended as a public spectacle in a piazza he had helped make notorious.

Portrait illustration of Tariq ibn Ziyad

The Mountain of Tariq

Apr 27, 2026 By Andy Barca

On 27th April 711, a Berber commander called Tariq ibn Ziyad landed at the rock that now bears his name. What followed was the destruction of the Visigothic Kingdom within months — and the beginning of 781 years of Muslim rule in Iberia.