-carrying fleas dies, or the temperatures prevent the plague from spreading, the cycle continues until all the variables once again allow for the plague to spread. Gottfried successfully conveys his point. Robert S. Gottfried achieved in getting his two theses across. His methods were to educate the reader on the topic, giving only the facts necessary to convey his point. After giving the reader information on plague and Medieval Europe, he argued his thesis, making frequent references to points he had made earlier in the book. Gottfried also made it obvious that others supported his theories. At the end of each important point, he marked it with a number corresponding to the reference in the back of the book. In conclusion, The Black Death successfully proves that a great deal of tragedy in the 13th century had much to do with animals in the environment. It also conveyed that plague accelerated the progress of culture, bringing the need for modern medicine. Gottfried makes it apparent that man did not understand enough about the environment to prevent plague, maybe a message to the world today. Dense population, as Gottfried suggested, breeds plague. Early plague has educated us, and we should focus on this, plague seems to be inevitable with certain circumstances and lack of knowledge. Not only did Gottfried educate us on the past, but may have prepared us for the future. ...