Bubonic Plague 1347-1352
The Bubonic Plague is also known as The Black Death. It is a deadly disease which was caused by a bacteria carried by fleas, the infected fleas attached themselves to rats, and from rats the fleas jumped to people. It killed about one-third of all Europeans, and tens of millions of people worldwide. About half of the people who received the disease died within days. A trading ship brought the disease to Italy, and from that point on it spread along the European trade routes, to France, Germany, and England. This caused population in Europe to decrease, and also affected their economy.