<P> In anthropology and geography, a cultural region, cultural sphere, cultural area or culture area refers to a geographical area with one relatively homogeneous human activity or complex of activities (culture). These are often associated with an ethnolinguistic group and the territory it inhabits . Specific cultures often do not limit their geographic coverage to the borders of a nation state, or to smaller subdivisions of a state . Cultural "spheres of influence" may also overlap or form concentric structures of macrocultures encompassing smaller local cultures . Different boundaries may also be drawn depending on the particular aspect of interest, such as religion and folklore vs. dress and architecture vs. language . </P> <P> Cultural areas are not considered equivalent to Kulturkreis (Culture circles). </P>

What are culture areas and why are they used in studying native north american musical styles
find me the text answering this question