Final answer:
The Black Death contributed to decreased population and a decline in the feudal system, while the spread of the disease was facilitated by an increase in rats and fleas and a lack of sanitation. The Black Death also led to ineffective treatments for the disease. The boom in the economy was not directly related to the Black Death.
Step-by-step explanation:
Contributing to the spread of the Black Death:
- Increase of rats and fleas
- Lack of sanitation
Effects of the epidemic:
- Decreased population
- Decline in feudal system
- Ineffective treatments
Not directly related to the Black Death:
Learn more about the spread and effects of the Black Death