The fleas and rats came on boats through Asian merchants and boats..
The fleas and rats regurgitated into human wounds, infecting them.
The disease spread very quickly, earning the name "Black Death."
Feudalism starts to decline as the social barriers become weaker.
Due to the large number of deaths taken by the plague, the common people became more powerful as there was a shortage in workers.
R.I.P Black Death Victim
WE WANT LAND!
France and England began the Hundred Years War over land.
Joan of Arc led France to multiple victories before being burned at the stake.
The kings and commoners became powerful as kings no longer relied on nobles to supply knights, and commoners felt loyalty to the monarch and one another, bringing a sense of national unity and patriotism.