Factors of production are grouped into four categories, which are is an example of

 Factors of production are grouped into four categories, which are land, labor, capital and entrepreneurship. Land are natural resources, labor is the work for a paycheck (earns wages), capital denotes physical objects,like  buildings, plants, machinery or non-physical things like human skills,  knowledge and entrepreneurship stands for the ability to organize production, risk taker, ideas... A worker is an example of labor.

Who what do u think?

Popular sovereignty or the authority of the people referenced in the permeable of the constitution . this principle states that government power comes from the consent of the citizens.