| Term | Definition |
| Bubonic Plague | 1/3 of all Europe's population died, disease spread by rats, brought by sailors to Crimea, work shortage, wages for skilled laborers soared; Black Death |
| Black Death | The bubonic plague which killed 1/3 of Europe's population; caused a person's skin to turn black |
| 1347 | traders brought rats from central and eastern Asia, and unknowingly brought them across the Mediterranean |
| buboes | swellings caused by the bubonic plague |
| rats | came from Asia with the traders and carried the disease all over Europe |
| fleas | the fleas were the ones that carried the plague and the ones to spread it |
| livestock | lived so close to the villages that they also caught the disease |
| sewage system | because of the villages' lack of this the rats and fleas took up a home in the garbage |
| carts | since so many people died so quickly, these were sent through the city to pick up the bodies |
| end of the world | the plague spread so quickly that many people become afraid and thought this, left town and thus spread the disease further |
| mass graves | people dug these to bury the dead, but often so many victims are infected that there is no one left to bury them |
| Central Asia | this is where the plague began and slowly spread throughout Europe |
| Hanseatic League | an alliance between northern European cities to protect their trade routes |
| Venice | controled trade between Asia and Europe |
| Genoa | controled trade in the western Mediterranean |
| China | where the plague began after brought over from Asia |
| Crimea | where the first outbreak of the plague is located |
| 1350 | plague kills off 35% of London's population |
| grain ships | these are what brought th plague to Europe |
| 1/4 of Europe's people | this is how many people were killed during the plague |