This choropleth map visualizes internet usage percentages for selected countries, with darker blue shades indicating higher adoption rates. It uses D3 v7’s `d3.geoNaturalEarth1` projection and `d3.geoPath` to render country boundaries from TopoJSON data loaded via world-atlas, while a sequential `d3.scaleSequential` with `d3.interpolateBlues` encodes the values. Hovering highlights a country and displays a tooltip with its name and usage percentage. A gradient legend with a linear axis communicates the 40–100% range.