This stylized bar chart displays the top 10 most populous countries using data from the United Nations World Population Prospects 2019, with populations formatted in billions. It uses D3’s `scaleBand` and `scaleLinear` for axes, React with `useData` to fetch and slice the CSV data, and SVG `<rect>` elements for the bars. The chart features a Poppins font, custom tick colors, and hover tooltips via `<title>` elements, with the x-axis labeled "Population."