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This example demonstrates a data visualization that renders a world map using D3.js. It loads geographic data from the `world-atlas` package as GeoJSON, then maps country boundaries as SVG paths using D3’s geo projection capabilities. The map colors countries based on data fetched from a state-specific source, with hover tooltips showing additional information. The code imports D3 functions like `select`, `json`, and `path` to build the visualization, and uses local ES6 modules for message handling.