A horizontal bar chart displays the population of the ten most populous countries in the year 2000, sorted in descending order. The visualization uses D3 v7 with an SVG rendering approach, employing `d3.scaleLinear` for the x-axis and `d3.scaleBand` for the categorical y-axis. Data is loaded asynchronously via `d3.csv` from a GitHub-hosted CSV file, then filtered and sorted client-side. The chart includes labeled axes, tick marks, and a title, with light green bars representing population values in billions.