Blog

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

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.

Portrait of William Shakespeare, attributed to John Taylor (the Chandos portrait).

The Man Who Wasn't Supposed to Write Shakespeare

Apr 26, 2026 By Andy Barca

On 26 April 1564, William Shakespeare was baptized in Stratford-upon-Avon. His birth date is unknown. For some people, this uncertainty is enough to convince them that a glover's son could not possibly have written Hamlet.

Map of the major alliances, theaters, and campaigns of the Peloponnesian War ending in 404 BC.

The War That Broke Greece

Apr 25, 2026 By Andy Barca

On 25 April 404 BC, Athens surrendered to Sparta, ending the Peloponnesian War. Twenty-seven years of plague, naval catastrophe, and Persian gold had turned Greece's golden age into rubble — and left a warning nobody has quite managed to heed.

Granite statue portrait of Pharaoh Thutmose III, ruler of Egypt's 18th dynasty.

The Regent's Shadow

Apr 24, 2026 By Andy Barca

On 24 April 1479 BC, Thutmose III became Pharaoh of Egypt. For the next 22 years, his stepmother Hatshepsut ran the kingdom. When he finally ruled alone, he built the largest empire in Egyptian history — then spent years trying to erase her from it.

Painting of the Battle of Villalar (1521), where royalist forces defeated the Comunero army.

A Foreign King's Close Call

Apr 23, 2026 By Andy Barca

On 23 April 1521, royalist forces crushed the Comuneros on a muddy field at Villalar. The revolt had almost ended the Spanish reign of Charles V before it properly began - a teenage Habsburg who spoke no Castilian, travelled with a Flemish court, and treated Spain as a bank to finance his Imperial ambitions elsewhere.

Oscar Pereira da Silva's painting of Pedro Álvares Cabral's landing at Porto Seguro in 1500.

The Line Before the Land

Apr 22, 2026 By Andy Barca

On 22 April 1500, Pedro Álvares Cabral sighted a mountain on the Brazilian coast and claimed it for Portugal. The territory had already been assigned to his king six years earlier, by a line drawn through an ocean that no one could accurately locate.