An unclassed choropleth map, such as the one pictured above, is a map that displays areal data for, however, the information is not grouped into smaller groups, such as in a classed choropleth map. This particular map of France, drawn by Charles Dupin in 1826, boasts the dubious title of first choropleth map, however, his unclassed style made it difficult to portray information comparitively, as each value was given its own unique color. Though not perfect, this map was the basis upon which cartogrophers were able to build and grow to disover other variations of this choropleth map.
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