This example displays a bar chart of the top 10 most populous countries in 2018, using data from the United Nations World Population Prospects. It visualizes population values with horizontal bars and customizes the axes: the y-axis labels are kept, while grid lines are removed, and the x-axis uses a `format('.3s')` tick formatter to abbreviate numbers (with 'G' replaced by 'B' for billions). Built with D3 v5, it uses `scaleBand`, `scaleLinear`, `axisLeft`, and `axisBottom`, rendering SVG elements directly within a pre-sized `<svg>` container.