Linked from
The 17 pages that link to Choropleth map, each with the reason it gives.
Data visualizationBroader topic: It displays how a measured quantity varies across geographic areas.
World mapBroader topic: It is a common way to portray country-level statistics on a world map.
CartogramCompared with: It encodes data with color rather than changing regional area.
Map symbolRelated: Its area fills are symbols whose ordered shades encode quantitative differences.