This example visualizes the top 10 most populous countries as a "pathetic" bar chart with no axes, labels, or gridlines—just raw rectangles scaled by population. The code uses React hooks (`useState`, `useEffect`) to load and manage data, while importing `csv`, `scaleBand`, `scaleLinear`, and `max` from D3 v5 to parse the United Nations World Population Prospects 2019 dataset and compute bar widths. Bars are rendered as SVG `<rect>` elements, with the x-scale mapping population values to pixel widths and the y-scale positioning each country’s bar vertically. The chart intentionally omits all chart furniture, leaving only the visual proportions of the data.