This horizontal bar chart displays the populations of ten countries in the year 2000, sorted by country name. The visualization uses D3 v7 with SVG rendering, employing `d3.scaleLinear` for the population axis and `d3.scaleBand` for country categories. Bars are colored lightgreen, with formatted tick labels using `d3.format('.2s')` to display values in billions. Data comes from a CSV file loaded via `d3.csv`.