This horizontal bar chart displays the top 10 most populous countries based on 2018 United Nations World Population Prospects data. The chart encodes population values as bar widths using D3's `scaleLinear`, with country names positioned along a `scaleBand` y-axis. The visualization is rendered as an SVG, with axes generated via `axisBottom` and `axisLeft`, and tick labels formatted using D3's `format` function. Bars are styled with a steelblue fill, and the chart includes a title and axis label.