This example displays a world map using D3.js, coloring each country orange and highlighting it yellow on hover. It visualizes primary balance and economic data by country, with tooltips showing country names. The visualization uses `d3.geoEquirectangular` projection, `d3.geoPath` to render geographic paths, and TopoJSON to convert world atlas data. Users can zoom and pan the map via D3’s zoom behavior. Data is loaded from CSV and JSON sources via `Promise.all`, and each country includes a `<title>` element for hover details.