Thematic Maps

http://www.mapsofworld.com/usa/thematic-maps/

This is a thematic map showing the connection between which parts of the US grow what quantities of barley, cotton and corn. It could potentially be argued from this map that certain climates have proven to be better for yielding different types of crops, out of these three crops. It is a thematic map because it shows a locational relationship between an area or a people to another characteristic, in this case, agricultural focus/contribution.