What Mansa Musa Actually Did to the Cairo Gold Market

On July 19, 1324, the king of Mali crossed the Nile into Cairo with a caravan the Egyptian historian Shihab al-Din al-'Umari, writing a decade later, struggled to describe. Mansa Musa had camped three days outside the city, by the pyramids at Giza. He had thousands of attendants and, by various accounts, around eighty camels loaded with gold dust. He was on his way to Mecca, prepared to spend.

He spent. Al-Umari, working from interviews with Cairenes, wrote that Musa "left no court emir nor holder of a royal office without the gift of a load of gold," and that "the Cairenes made incalculable profits out of him and his suite in buying and selling and giving and taking." The market noticed. Gold's price in silver dirhams, al-Umari reports, dropped from 25 to under 22, and "did not go above that number for at least twelve years."

From that paragraph grew a familiar legend: one Malian king, in two months, crashed the Egyptian economy. The details vary — sometimes a ten-year recovery, sometimes a price drop across the whole Middle East — but the shape is always catastrophic.

Historian Warren Schultz, who works on Mamluk monetary history, has a smaller version. A move from 25 to 22 dirhams per dinar is well inside the normal noise of Mamluk gold prices. Cairo's mint already absorbed gold from the Sudan in volume; this was a big shipment, not an alien event. No contemporary report of bread riots, no record of ruined merchants, no tax-roll dent. What we have is a generous king, a market that adjusted, and a chronicler reaching for the most striking line.

Musa kept going. He brought the architect-poet Abu Ishaq al-Sahili back to Mali with him. In 1327 he commissioned the Djinguereber Mosque in Timbuktu, which still stands. The crashed economy did not.