Upgrade subject to access all content
Gaines, Cork. MLB Team in Every US County. Digital image. Business Insider. N.p., 2 Apr. 2015. Web. 5 Dec. 2015.
The image above is a map showing the locations of supporters of major league baseball teams, based upon Facebook likes. As you will see from the map, each of the teams has its own region within the United States.
What types of regions are these?