There are several reasons why the Aztec need for victims for sacrifice led to problems controlling the empire, but a major reason was that it terrified many average citizens.
This is a sharecropper.
(Dictionary) sharecropper (noun):
tenant farmer who gives part of each crop as rent
The effects of the Black Death were many and varied. Trade suffered for a time, and wars were temporarily abandoned. Many labourers died, which devastated families through lost means of survival and caused personal suffering; landowners who used labourers as tenant farmers were also affected.
Lance Mackey and Rick Mackey.