The Plague took out 60-90% of the population of China.
The Plague killed 1.5 million out of 4 million people
Thousands of Jews persecuted due to being blamed for the Black Plague.
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
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.