This bar chart displays the top 10 most populous countries based on 2018 estimates from the United Nations World Population Prospects, with population values scaled in thousands. The visualization showcases customized D3 v5 axes: the y-axis uses `scaleBand` for country labels, while the x-axis employs `scaleLinear` with a tick formatter that converts millions to billions. The code uses `axisLeft` and `axisBottom` to render axes, removes default domain lines, and adds custom axis labels and a title via SVG text elements.