This interactive bar chart ranks the top 10 most populous countries in 2020 using data from the United Nations World Population Prospects 2019. The visualization uses React for component rendering and D3’s `scaleBand`, `scaleLinear`, and `format` to construct axes and tick labels with SVG elements. Hovering over a bar reveals a tooltip with the formatted population value via a native `<title>` element. The chart features a clean, stylized design with Poppins typography and teal-colored bars.