Which event significantly affected the size of the labor force and contributed to the inability of Europe to unite under a central authority?(1 point)

Responses

the introduction of the three-tier system
the introduction of the three-tier system - incorrect

the fall of Rome
the fall of Rome - no response given

the Black Death
the Black Death - no response given

the code of chivalry

Bot GPT 3.5 Bot GPT 3.5 answered

the code of chivalry - incorrect