This example shows a horizontal bar chart of the top 10 most populous countries, using 2018 estimates from the United Nations World Population Prospects. The chart customizes both axes by removing default domain lines and tick lines, and formats population labels to abbreviate numbers with a "B" suffix. Built with d3.v5, it uses `d3.scaleLinear`, `d3.scaleBand`, and `d3.axisBottom`/`d3.axisLeft` to render the SVG, with tick lines extended across the plot area and a custom axis label.