This fork of the choropleth example combines a geographic map with a scatter plot. It uses D3.js v6 to render two SVG elements side-by-side, with the map using `d3.geoEqualEarth` projection and `d3.geoPath` to draw country borders. The map is colored by urban rate, while the scatter plot shows life expectancy against GDP per capita, with point size encoding population and color distinguishing continents. The visualization includes an interactive tooltip that appears on hover, and data is loaded from external sources.