On January 2nd, 1492, Ferdinand and Isabella took the surrender of Granada, and a 40-year-old sailor from Genoa watched from the crowd. For 6 years Christopher Columbus had asked them to pay for a voyage west to Asia, and twice their experts had told them the ocean was too wide. Within days they turned him down again, this time over his price: admiral, viceroy, and a tenth of the profit. He packed his charts on a mule and rode for France. Back in the camp, the king’s finance officer told the queen the whole fleet needed only 2,500 crowns, about a quarter of 1 percent of what the war had cost, and offered to lend it himself.

She had 2 choices. Let him go, or send someone after him. She sent a court officer, who caught Columbus on a stone bridge 4 miles down the road. The contract was signed April 17th, 3 ships left Palos in August, and on October 12th a lookout sighted land in the Bahamas.

What if she’d let him go?

This week we hit CTRL+Z on the bridge at Pinos, and follow the ripple to today: a Genoese chartmaker growing old in a room over the harbor at Honfleur with Japan drawn 2,400 miles west of the Canaries, a Portuguese clerk writing Lisbon a letter about parrots from a beach in Brazil, a Breton captain named Jacques Cartier anchoring off Hispaniola in 1534, a grandson of Moctezuma ruling a city that buys its matchlocks from Norman traders, and a Spanish army marching out of the Netherlands because the king can’t pay it. In 2026 the 2 continents are called Santa Cruz, Portuguese is spoken from the Amazon to the River Plate, and Tenochtitlan is still on its lake, because one January a queen let a sailor keep riding.

Unfortunately, I came down with an illness this week that took my voice completely. So, instead of nothing, I'm sharing one of my favorite episodes to research:

Hannibal of Carthage conquers Rome.

I'll be back next week with a new episode. Stay healthy out there.

On Easter Sunday, April 10th, 1803, Napoleon Bonaparte sat inside the palace of Saint-Cloud with 2 ministers who couldn't agree. One told him to sell the French colony of Louisiana before the Royal Navy took it for nothing. The other told him to keep it and send the 12 ships and 3,000 soldiers already waiting in a Dutch harbor. Britain was 38 days from declaring war, and an American named James Monroe was already riding for Paris with orders to buy one city, New Orleans, for 10 million dollars.

He had 2 choices. Sign the order that sent the fleet, or sign the order that gave the whole territory away. At daybreak he told his treasury minister, "I renounce Louisiana." The United States paid 15 million dollars and nearly doubled in size. Britain declared war 18 days later.

What if he'd listened to the other minister?

This week we hit CTRL+Z on the palace at Saint-Cloud, and follow the ripple to today: a French garrison dying of yellow fever behind an earthen wall on the Chalmette plain, a British admiral landing troops through a Louisiana bayou 11 years before Andrew Jackson tries to take the same ground and fails, a Cherokee chief signing for land on the Arkansas river under the protection of the Crown, and a Canadian prime minister promising a railway from Montreal to New Orleans. In 2026 the Mississippi river is an international border for its entire length, and the customs post on the Memphis bridge flies a foreign flag, because one Easter Sunday a First Consul changed his mind by morning.

Just a quick update as to why there was no episode today and informing you that Episode 28 comes out tomorrow!

Thank you all so much for listening!

On June 11th, 1971, Arthur Sulzberger sat in the publisher's office at the New York Times with 7,000 pages of a top secret Pentagon history of the Vietnam War, copied without permission by a former analyst named Daniel Ellsberg. His reporters had been writing in secret in a hotel for 3 months. His lawyers had told him that printing the pages was a crime and that reading them was too.

He had 2 choices. Put the government's own history of the war on the front page of Sunday's paper, or take the lawyers' advice and lock the boxes away. He printed it. Within days a federal judge shut the series down, and 19 days after the first story the Supreme Court ruled 6 to 3 that the government couldn't do that.

What if he had taken the lawyers' advice?

This week we hit CTRL+Z on the publisher's office at 43rd Street, and follow the ripple to today: a Washington Post editor in a Volkswagen under the Mayflower Hotel marquee at midnight, a freshman senator from Alaska reading 4,000 classified pages into the record of a subcommittee on public buildings, 2 men in hats running blank paper through the copiers at a church press on Beacon Hill, and a Times lawyer signing a receipt for 3 cardboard boxes. In 2026 the New York Times is suing the Pentagon with a 1931 case about a Minneapolis scandal sheet, because one Friday morning in 1971 a publisher listened to his lawyers.

On July 27th, 1433, the officers of the biggest navy on earth lined up in a palace courtyard in Beijing to receive robes and paper money from Emperor Xuande. They had been gone 2 and a half years, as far as the Persian Gulf and the Red Sea. Zheng He, the admiral who had led them for 28 years, was not in the line. He had died at Calicut, on the coast of India, that spring.

Sending the fleet back out would have cost the emperor almost nothing. The ships were built, and 2,000 tons of pepper sat in the warehouses at Nanjing. The ministers who wanted the ships broken up had paid for every voyage and got none of the income. Xuande had 2 orders in front of him, one that made the fleet permanent and one that left it to the ministers. He signed the second. Eighteen months later he was dead at 35, and the men governing for his 8-year-old son banned the building of seagoing ships.

What if he had signed the other one?

This week we hit CTRL+Z on the courtyard where the fleet was paid off, and follow the ripple to today: a 78-year-old admiral taking 100 ships out of Fujian, Vasco da Gama carrying 4 cloaks and 6 hats up the beach at Calicut while an agent of the emperor counts his guns, a Spanish captain rounding a bend in the California coast and finding a walled harbor already there, and a Chumash chief on Santa Cruz Island with a Ming customs stamp in his house. The oldest building in Monterey is a Chinese customs house, because in January of 1434 an emperor gave his ministers half the pepper.

On January 1st, 1962, the Beatles drove 10 hours through snow to a Decca studio in West Hampstead, borrowed the company's amplifiers, and played 15 songs in an hour with Pete Best on drums. Five weeks later, on February 6th, Brian Epstein sat down to lunch at Decca's head office on the Thames and heard the answer. Dick Rowe, the man who chose what Decca recorded, had picked a group from Dagenham instead, 12 miles from the studio rather than 200.

Signing would have cost Decca almost nothing. Rowe's own assistant, Mike Smith, wanted both groups and was told he could have one. Epstein had promised Decca's sales department that his family's shops would buy 3,000 copies of any single the group made, which in 1962 was enough to cover the record before it existed. Rowe said years later that the number would have forced him to sign them. Nobody on the sales floor carried it upstairs, and Epstein left with 2 reels of tape in his briefcase.

What if somebody had said the number out loud?

This week we hit CTRL+Z on the lunch where Decca said no, and follow the ripple to today: a hired drummer at the kit while Pete Best watches through the control room glass, Ringo Starr on a boat to Hamburg for £20 a week, a producer who quits the biggest band in the world over a van driver's wages, an orchestra on a riser in West Hampstead in 1967, and a tour bus outside a red brick building that isn't Abbey Road. The tapes end up in the same company's vault either way, because on the one afternoon it counted, a sales manager finished his coffee and repeated a figure.

On June 8th, 1528, Pope Clement VII signed a decretal commission — a document giving two cardinals the power to end Henry VIII's marriage on English soil, with no appeal to anyone — and then ordered it shown to the king once and burned. Fourteen months later, on July 23rd, 1529, one of those cardinals stood up in a converted monastery hall at Blackfriars and adjourned the court for the harvest. It never reconvened.

Signing would have cost Clement almost nothing on paper. Popes had been dissolving royal marriages for 400 years, and Alexander VI granted Louis XII of France one in 1498 on a case so thin the queen produced witnesses to her husband's boasting. Clement himself offered to bless a wedding between Henry's daughter and Henry's illegitimate son to make the problem go away. What stopped him was a Spanish army that had sacked Rome in 1527 and held him in a fortress for 6 months, commanded by the queen's own nephew.

What if he'd let that first document stand?

This week we hit CTRL+Z on the annulment Rome refused, and follow the ripple to today: a prince born at Greenwich in 1531, an Englishman in white robes in Rome, a letter from Edinburgh that gets a polite refusal, and a bell tower in Yorkshire with the roof still on it. Nobody ever chisels the abbeys down, because on the one afternoon it counted, a frightened man in Orvieto signed his name.