Which of the following best explains why it is difficult to define a cultural region?(1 point)
It is difficult to define a cultural region because maps show different borders.
It is difficult to define a cultural region because a formal region may not be the same as a functional region.
It is difficult to define a cultural region because physical boundaries are more important than political boundaries.
It is difficult to define a cultural region because culture is constantly shifting and people perceive cultural regions differently.