A grouped bar chart displays population values for ten countries, with the United States leading at 336 and smaller values for nations like Sweden and Japan. The example demonstrates D3’s `append()` method by building an SVG chart from a hardcoded JavaScript array of objects. Using D3 v7, the code selects a `div#barchart` element, appends an SVG container, and binds data to rectangles via `enter()`-less loops, styling bars with CSS class `.bar` and a `CornflowerBlue` fill. The static visualization uses pixel-based dimensions defined in CSS.