Thematic map is the type of map that would most likely be used to show distribution of soybean farms in Illinois.
A thematic map is a type of map that is specially created to display a certain theme or topic associated with a particular geographic area. A thematic map gives special importance to a certain topic such as the average distribution of rainfall in a particular area. This map uses natural features like political boundaries, coastlines, rivers, and city locations as reference points to improve an individual’s understanding of the map's purpose and topic. Types of thematic map include; choropleth map, dot map, contour map, dasymetric map, and graduated symbols.