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Luxury historical commentary. Read 'Saladin the Strategist': https://t.co/kiWQBy63F2 Other books: https://t.co/rMfJ3koLAO
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Feb 10 9 tweets 3 min read
It took a decade for a 17th-century financial crisis to travel from Spain to China.

The Spanish Crown suffered a pair of fiscal disasters in 1627-28 which eventually forced it to cut silver exports to the Far East, hammering a Ming China already teetering on the precipice. Image The flood of New World silver into Asian markets in the 1500s crushed the value of metal currency, but also supercharged trade as new markets were opened for exports. The effect was the same from Syria to China.
Jan 3 21 tweets 8 min read
The Spartans drilled.

This is a ridiculous reading of the sources mentioned, and it neglects a few other important ones.

Thread. To start with, one thing he gets right is that the classical Greeks deprecated the value of individual skill at arms—if anything, that would detract from their willingness to hold the line. Here’s a wonderful passage from the Spartan poet Tyrtaeus, who is mentioned: Image
Oct 19, 2023 10 tweets 4 min read
Easy to underestimate how thorough the breakdown of a centralized system can be. To put it in modern perspective, here's what it takes just to get the right 𝘸𝘢𝘷𝘦𝘭𝘦𝘯𝘨𝘵𝘩 for the lasers in lithography machines used to etch the most advanced microchips (from "Chip War")...


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That's a staggering amount of material, intellectual, and economic infrastructure required just to sustain one part of a very complicated process. Sustaining that infrastructure depends in turn on maintaining the process. If any one of several highly-centralized nodes is disrupted for any length of time, it becomes disproportionately more expensive and difficult to get it back online.
Aug 12, 2023 8 tweets 4 min read
The medieval Kingdom of Cyprus had a very distinctive aristocratic culture which closely followed trends in France. This lasted long after the fall of its neighboring Crusader states and through the Venetian period, up until the Ottoman conquest of 1571. Thread. Source: https://defendingcrusaderkingdoms.blogspot.com/2019/10/the-franks-of-cyprus.html The House of Lusignan founded the Kingdom in 1196 and ruled it for its three-century existence. They were of French origin, and attracted many knights and nobles from both France proper and the Crusader states.
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Aug 5, 2023 26 tweets 10 min read
In the last years of the 15th century, Venice suffered twin calamities. Their full consequences took a long time to bloom, but their combined effect knocked Venice from the height of her power and sent the Republic into a steady decline. Thread. Image As soon as Venice began acquiring her terra ferma empire in Italy, she found herself torn between obligations on the mainland and the rising Ottoman threat in the east. The great danger was that crises would flare up in both directions at once.
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Jul 30, 2023 24 tweets 8 min read
The Genoese acquired Constantinople's suburb of Galata under a 1267 treaty with Byzantium. It was in many ways one of the first modern colonies, a prototype for the treaty ports of future imperial powers. Thread. Image The 1261 Treaty of Nymphaeum had already guaranteed Genoa extensive trade concessions in the empire in return for naval assistance against the Crusaders occupying Constantinople. As it turned out, the Byzantines recaptured Constantinople without needing this help. Image
Jul 24, 2023 31 tweets 12 min read
The Blue Banana—an arc through Western Europe containing an exceptionally high % of GDP and population—is one of those fashionable concepts like BRICS that looks nice at first glance, but doesn’t necessarily reveal anything deeper.

But supposing it does, what is it? Thread.
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There are four big factors:
-Physical geography
-Trade patterns encouraging industrial development
-Resource geography
-Historic political fragmentation

These help explain not only why the Blue Banana is so densely developed, but why other advanced regions aren’t.
Jul 23, 2023 12 tweets 5 min read
Venice’s famous glass industry owed much to its trade connections with the Orient—most obviously, techniques learned from Syrian and Egyptian craftsmen.

But it also involved some of the more arcane aspects of shipping: cargo imbalance and freight differentials. Thread. Source: https://en.venezia.net/experience-murano-glass When Genoese, Venetian, and Pisan crews arrived in the Levant in the wake of the First Crusade, they quickly realized the fortunes to be made. They assisted the Crusaders in conquering cities along the coast in return for quarters that could be used as trade colonies. Image
Jul 22, 2023 10 tweets 4 min read
Modern banking emerged in the late Middle Ages as Italian firms figured out how to skirt the Church’s usury laws. How did they actually do it? Thread. Image Banking ultimately came out of money-changing. Money-changers had always been around, earning a premium on the spread between exchange rates—this was necessary for interregional commerce.

What changed in the later Middle Ages was the expansion of long-distance trade. Image
Jul 21, 2023 11 tweets 5 min read
One point that Sumption makes about Edward III is how young he and his companions were when they overthrew the regency in 1330. This helps explain why Edward was so bold in his designs in the Hundred Years’ War, which broke out just 7 years later. Thread. https://t.co/gkkX8uj8m5 https://t.co/dGHHhI8rr8twitter.com/i/web/status/1…


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William Montagu was among the oldest of the lot, 36 when the war broke out, and was the king’s closest advisor. He was sent to the Low Countries in 1337 to arrange an alliance with local princes.
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Jul 20, 2023 18 tweets 7 min read
Sanctions and economic warfare almost never work as intended—at best, they degrade a state’s capacity to act over time. But in the runup to the Hundred Years’ War, England deployed one of the most effective economic blockades of all time.

Thread on the Flemish wool embargo. https://t.co/58btuvvK1m
Image By the summer of 1336, it was clear that France and England were headed for war. Tensions had been building for years over the Duchy of Aquitaine, a territory in southwest France held in fief by the English Crown. Image
Jul 19, 2023 14 tweets 7 min read
How did Aleppo, which stands on a minor river in the middle of a vast plain, come to be the greatest metropolis in Syria?

Simply by standing dead center on the overland portion of the trade route connecting the Indian Ocean to the Mediterranean. Thread.
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There were three main routes to the Mediterranean from the Indian Ocean in antiquity:
-Through the Red Sea then overland to the Nile
-Through the Persian Gulf, up the Euphrates, then overland to the Orontes near Antioch
-Overland from southern Arabia Image
Jul 18, 2023 23 tweets 10 min read
The Crusades are sometimes presented as a flash in the pan, a meteoric burst of conquests that were bound to crumble eventually. But they could have just as easily endured centuries longer than they did.

Thread on the failed Crusade against Damascus. https://t.co/JZYbRQIvtF
Image The Second Crusade was launched in response to the first great crisis that Outremer faced: the fall of Edessa to the powerful warlord Zengi. This brought the loss of much of their inland territories east of the defensible coastal ranges and the Jordan.
Jul 17, 2023 8 tweets 5 min read
Most of the adventures in the Arabian Nights take place around the Indian Ocean, stories with Persian or Indian origins. But at least one of them comes from Byzantine tales of the exotic. Thread. https://t.co/32qnrzdCOK https://t.co/KeoZXWzYnftwitter.com/i/web/status/1…

Image In the 4th century, an Egyptian Greek visited the island of Taprobane (usually identified as Sri Lanka, based on Ptolemy’s description). He reported that magnetic rocks on the island prevented ships made with iron nails from departing. https://t.co/WsdwqjNOsAtwitter.com/i/web/status/1…
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Jul 4, 2023 30 tweets 11 min read
On this date in 1187 Saladin destroyed the Crusader army at Hattin, killing or capturing all but a few hundred of more than 20,000 men.

Perhaps history’s most one-sided victory, won by a middling tactician with a decidedly mixed record against the Franks. How did he do it? https://t.co/JZYbRQHXE7
The campaign of 1187 was Saladin’s fifth major invasion of the Kingdom of Jerusalem. He had greatly outnumbered the Crusaders on each previous occasion, but these had resulted in one major defeat, a minor victory, and two stalemates.
Jul 3, 2023 22 tweets 9 min read
The Frankish knights of Outremer survived more than four decades in a period of acute crisis, during which they were desperately outnumbered by an increasingly united foe.

How did they do it? After reaching their territorial peak in the 1130s, the Crusader states were put on their back foot. Upper Mesopotamia and most of inland Syria were being united under a single dynasty, while the relatively few Frankish knights received little reinforcement from the West.
Jul 2, 2023 23 tweets 10 min read
The voyages of Sinbad the Sailor unfailingly met with disaster, even if he always managed to return home laden with riches.

What would a voyage look like if he ever managed to complete one? https://t.co/HK7CPQzi1I
Image Trade expeditions usually departed Basra’s port of al-Ubullah in September or October, when the seas were still calm. Sailing down the Shatt al-Arab, they entered the Gulf.
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Jun 30, 2023 24 tweets 9 min read
Basra, the famed city from which Sinbad set off on his voyages, was one of the jewels of Iraq and one of the most important centers for the Indian Ocean trade under the Abbasids. Thread.
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Medieval Basra was not located at the same site as the modern city. It was originally founded as a garrison town in the wake of the Arab conquests on the edge of the desert, which gave easy access for armies coming from Arabia to reach the Gulf. Image
Jun 27, 2023 8 tweets 3 min read
Guicciardini v. Machiavelli

The most common objection I got to this thread was that Machiavelli was primarily a political philosopher who observed the broad patterns in human affairs.

This is where his friend Guicciardini serves as a useful antidote. Thread. https://t.co/nWRIEbbOUv
Francesco Guicciardini, who was 14 years Macchiavelli’s junior, also served the Florentine Republic. Not being as prominent in the government, he was allowed to retain his office when the Medici returned to power—he was even brought into Papal service under the Medici pope Leo X.
Jun 25, 2023 22 tweets 9 min read
Was Machiavelli right about anything? (No)

Thread. A lot of Machiavelli quotes have been making the rounds the past day or two, only to look completely silly less than 24 hours later.

But Machiavelli himself had already discredited his ideas by the time he even put pen to paper.
Jun 20, 2023 21 tweets 8 min read
MEDIEVAL RESERVE CURRENCIES

Several different coins served as the backbone of international trade during the Middle Ages. Although not exactly a reserve currency in the modern sense (there were no central banks), these followed the shifting pattern of economic might. Thread. Image Like a modern reserve currency, the high and consistent quality of certain medieval coins led them to be widely trusted for large commercial transactions, commanding a premium in international markets. Many commodities were priced in such a currency, even if paid in another. Image