This example displays the top 10 most populous countries as a horizontal bar chart with axes, using React components to render SVG elements. The `useData` hook loads the UN World Population Prospects 2019 CSV and parses the population column. D3 scales (`scaleBand`, `scaleLinear`) map data to coordinates, while custom `AxisBottom` and `AxisLeft` components generate tick marks and labels. React passes scales and data as props to these components, which use D3’s `ticks()` and domain methods to create the axis visuals.