This example visualizes the ten most populous countries using horizontal bars, with the underlying data from the United Nations World Population Prospects 2019. Rendered in SVG via React, the chart’s axes and rectangles are built from D3 scale components (`scaleBand`, `scaleLinear`) and custom components (`AxisBottom`, `AxisLeft`, `Marks`) that generate tick lines and labels. Population values are formatted with D3’s `format('.2s')` to display abbreviations like “B” for billions, while a `<title>` element provides tooltips. The visualization uses the Poppins font and a muted color scheme for the marks and axes.