Which of the following is not a propery of metals?

A nonmetal is simply an element that does not display the properties of a metal. It is not defined by what it is, but by what it is not. It doesn't look metallic, can't be made into a wire, pounded into shape or bent, doesn't conduct heat or electricity well, and doesn't have a high melting or boiling point.

by creating a labor shortage that pushed the continent toward a market economy

byzantine empire is the answer i think you are looking for.

hope this : )