Let's make a face with D3
A minimal SVG face assembles itself from a single circle, demonstrating how D3 v6 selections and attribute chaining work within a React framework. The code imports the `select` function from D3 and uses it to target the `<svg>` element, then appends a `<circle>` with a radius of 200 pixels, producing a simple stick-figure-like head. Data from `data.csv`—listing country populations in thousands—is not actually visualized, as the example focuses purely on basic SVG construction. The page loads D3 from a CDN and renders via `bundle.js` with a viewport sized at 960 by 500.