The black death is a deadly plague that killed millions of people. In source C it states that the black death was started by fleas who drank the blood of infected rat.Then the rats would spread it to humans by jumping on to them whenever they had the chance and drank the blood of humans.When the fleas are collecting the humans blood they start transmitting the rats infection into the humans.After the blood of the human becomes infected the symptoms start to show and have three days to live. When the humans became infected they could have all the symptoms or no symptoms at all.In source B the illustration shows that one symptom you get out of it is lymph nodes.In source A they say that the lymph nodes could be as big as an egg or apple.Sometimes
