Gunpowder transmission in the 1320s

Timeline

1. 1321–1324Silk Road · Central AsiaIn the early 1320s, exchanges of envoys, merchants, and artisans between the Yuan dynasty and the Ilkhanate continued, and gunpowder formulas and experience with fireworks and firearms spread westward through trade and military exchange, with Central Asia becoming a technological relay hub.
2. 1324–1327Cairo · EgyptMamluk Egypt in the 1320s already used gunpowder in siege engines and firework devices, and spread related technology and trade in raw materials (saltpeter, sulfur, charcoal) to surrounding regions through Mediterranean ports and Syrian trade routes.
3. 1327–1330Mediterranean · MediterraneanIn the late 1320s, merchants and scholars of the Italian city-states and Iberia encountered gunpowder knowledge through Arabic and Latin translations; although Europe already had pioneers such as Roger Bacon recording it, the 1320s remained a transitional stage from textual awareness to practical trial of firearms in combat.