This example displays the top 10 most populous countries as a horizontal bar chart using React and SVG, with data from the United Nations World Population Prospects 2019. The chart uses `scaleBand` for the y-axis and `scaleLinear` for the x-axis, with bars rendered as SVG `<rect>` elements. Axes are constructed manually via `.ticks()`, and data loading and parsing are handled with `d3.csv` inside a custom `useData` hook. The visualization includes clearly labeled country names on the left and tick marks on the bottom axis.