This bar chart displays the populations of 30 countries for the year 2020, sorted along the y-axis with horizontal bars extending from a zero baseline. It uses React with D3 v5 utilities such as `scaleBand`, `scaleLinear`, `max`, and `format` to compute scales and axis ticks. An SVG renders the visualization, with data loaded via D3’s `csv` from a GitHub gist. Native SVG `<title>` elements provide tooltips showing formatted population values, while the axes are built using custom `AxisBottom` and `AxisLeft` components.