Black — Plague

: The plague reportedly entered Europe during a Mongol siege of the Genoese port of Kaffa in Crimea. The Mongol army allegedly catapulted plague-infected corpses over the city walls, an early instance of biological warfare.

: The disease traveled along major trade routes, reaching the Black Sea by the late 1340s. black plague

While the exact territorial origin is debated, scientific evidence points toward Central Asia or China. : The plague reportedly entered Europe during a