A choropleth map of Venezuelan parishes colors regions by population density using a red-purple sequential scale. Hovering a parish reveals a tooltip with its name and population count. The visualization uses D3 v5 with `d3.geoNaturalEarth1` projection, `d3.geoPath` for rendering TopoJSON geometry, and a threshold scale for color encoding. Parish data merges external CSV values with the TopoJSON file.