This horizontal bar chart displays the top 10 most populous countries from the United Nations World Population Prospects 2019 dataset. The visualization uses React with D3 v5's `scaleBand` for the categorical y-axis and `scaleLinear` for the numerical x-axis, rendering bars as SVG rectangles. The code leverages `csv` from D3 to load data, and includes custom axis components for formatting tick labels with the `format` function. Tooltips provide formatted population values via the `<title>` element.