Number 7

The Black Death was a very deadly disease and came in three different forms. These forms are the bubonic, septicemic, and pneumonic plagues. It traveled very fast and could wipe out a huge population of people in no time. In the end, it killed about one-third of Europe's population. The plague moved along the caravan routes toward the West. By 1345 the plague was on the lower Volga River. By 1346 it was in the Caucasus and the Crimea. By 1347 it was in Constantinople. It began in a flea, which then got onto rats, which spread everywhere die to trade and shipping. The symptoms were very serious so if someone was infected, it meant that they were most likely going to die.