Blog

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

Title page of the Code civil des Français, original 1804 edition

The General's Other Victory

Mar 21, 2026 By Andy Barca

On 21 March 1804, Napoleon signed the Code civil des Français into law. His empire lasted eleven years. The Code is still in force.

The flag of the Dutch East India Company (VOC), circa 1630

The Lords Seventeen

Mar 20, 2026 By Andy Barca

On 20 March 1602, the Dutch Republic chartered a trading company with the power to wage war, mint coins, and execute criminals. It became the wealthiest corporation in history, and spent the next two centuries proving what happens when you give private actors sovereign force.

Photograph of David Livingstone by Thomas Annan

The Heart Under the Tree

Mar 19, 2026 By Andy Barca

Born on 19 March 1813 in a Scottish cotton mill tenement, David Livingstone spent thirty years in Africa making one confirmed convert, getting the Nile wrong, and depending on the slave traders he had dedicated his life to stopping. His servants carried him out.

A barricade at Chaussée Ménilmontant, 18 March 1871, during the Paris Commune

Seventy-Two Days

Mar 18, 2026 By Andy Barca

On 18 March 1871, Adolphe Thiers sent soldiers before dawn to seize 170 cannons from Montmartre. By evening, the French government had abandoned Paris. The working class ran the city for seventy-two days, long enough to terrify every government in Europe.

Battle of Munda, engraving by Matthäus Merian, c. 1625

Caesar's Last Victory

Mar 17, 2026 By Andy Barca

On 17 March 45 BC, Caesar won the last battle of his civil war at Munda. He later said he had often fought for victory, but at Munda he fought for his life. He had a year left.

An 1850 portrait of Lin Zexu, Imperial Commissioner of the Qing dynasty

Legalised at Gunpoint

Mar 16, 2026 By Andy Barca

In 1836, a Qing official argued for legalising opium to save the empire. The emperor said no. Twenty-two years later, the empire was required by British treaty to permit it.

Depiction of Mansa Musa from the 1375 Catalan Atlas, holding a gold nugget and wearing a golden crown

All the King's Gold

Mar 16, 2026 By Andy Barca

In July 1324, Mansa Musa — king of Mali and holder of more gold than anyone had ever seen in one place — arrived in Cairo with 12,000 servants, 80 camel-loads of gold dust, and no apparent intention of leaving with any of it.

17th-century portrait of the Shunzhi Emperor in imperial court robes

The Boy Who Held the Door

Mar 15, 2026 By Andy Barca

On 15 March 1638, Fulin was born — the ninth son of the Qing ruler Hong Taiji, and a child no one expected to matter. He was crowned emperor at five, began ruling at thirteen, died at twenty-two, and left behind a dynasty that lasted another 251 years.

Peter the Hermit leading crusaders eastward, miniature from Egerton Manuscript 1500, France, circa 1325–1350

The Goose That Went to War

Mar 14, 2026 By Andy Barca

In 1096, a woman set out for Jerusalem from France with a goose from her farm. Peasant crusaders took it as divine guidance. The goose died in northeastern France and never got close to the Holy Land. The people who followed it left a different kind of trail.