How did victims of the bubonic plague die?

In the Middle Ages the Bubonic plague came from the fleas living on rats. The rats bit the people or the fleas got on the people (since sanitary conditions were so bad that it was a nightmare) and the people got the bubonic plague. They developed sores ("ring around the rosie"nursery ryme) that were shaped like cirles that spread. There was no actuacl medicine back then and the diesese was highly contagious, so much that one-third of the population died. People had to bury people that died and they got the plague. The bodise were not always buried either. They died in the streets in their homes or trying to get help. they got bad fevers and ran out of strengh with no medicine it is easy to see why they died and why so many died. We have a cure for the bubonic plague today...just to be safe and prepared if it would ever start again.