This scatter plot visualizes the top 10 most populous countries in 2018, using UN World Population Prospects data. It displays each country’s population as a circle positioned along a linear x-axis, with country names on a point-scale y-axis. The chart is rendered as an SVG using D3 v5, with axes and ticks styled via CSS. The code applies a custom tick format to abbreviate large numbers, converting millions to billions where applicable.