Rats carried the disease in their blood. They were also able to spread the disease by riding boats with many people and using that to get from country to country. They also inhibited large populous cities which made the spread easier. Fleas, like rats, also carried the dreaded disease in their blood, it was just less obvious since they were much smaller. But, using the rats to get around, they were able to just as easily spread the disease but turning their victims from rats to going to human victims instead. Lastly, how quickly the Black Death spread definitely had an effect on how powerful it was. It was able to get across almost every continent between a timespan of only two years, which was very, very quickly. This also cause more of a population decrease due to food supply lowering. This shows that the three main causes of the Black Death were the rats, the fleas, and how quickly the disease was spread and
Rats carried the disease in their blood. They were also able to spread the disease by riding boats with many people and using that to get from country to country. They also inhibited large populous cities which made the spread easier. Fleas, like rats, also carried the dreaded disease in their blood, it was just less obvious since they were much smaller. But, using the rats to get around, they were able to just as easily spread the disease but turning their victims from rats to going to human victims instead. Lastly, how quickly the Black Death spread definitely had an effect on how powerful it was. It was able to get across almost every continent between a timespan of only two years, which was very, very quickly. This also cause more of a population decrease due to food supply lowering. This shows that the three main causes of the Black Death were the rats, the fleas, and how quickly the disease was spread and