Well, if we are talking about the black death? A reaction that they did was they all went into hiding because they thought that the black death was an angel or something targeting certain families, they were right it was something but it was just a virus that almost killed an entire country!!
Answer:
Frictional unemployment - the unemployment which exists in any economy due to people being in the process of moving from one job to another.
Hope this helps!
The only one with some similarities that I can recall at the time is China. Sorry if that’s wrong.
C. Cooperation among Great Powers rather than equality among all nations