The Plague took out 60-90% of the population of China.
The Plague killed 1.5 million out of 4 million people
King Edward III orders for the street to be cleaned of the corpses; the sick we're now being isolated in an attempt to avoid the plague
Thousands of Jews persecuted due to being blamed for the Black Plague.
1400's world population drops from an estimated 450 million to 300-350 million
This happened after the Plague, when feudalism had ended and people wanted to start a new life.