Section: Social Studies

25) The Bubonic Plague of the mid-fourteenth century was the most devastating natural disaster in European History. We now konw that this plague was caused by rats that were infected by bacteria-carrying fleas. The rats carried the disease as they were unknowingly transported with cargo ships through trade routes. A third of the entire population of Europe is thought to have been killed by this plague.

What caused the Bubonic Plague?

1. poor sanitation in crowded European cities.
2. a disease carried by sailors through trade routes.
3. a highly contagious virus spread by human contact.
4. rats that carried the disease through crowded cities.
5. fleas on rats that carried the deadly bacteria through trade routes.