A horizontal bar chart ranks ten countries by population, with the data loaded from a CSV file and drawn as SVG rectangles. The visualization uses `d3.scaleLinear` and `d3.scaleBand` for positioning, while `d3.axisLeft` and `d3.axisBottom` render country labels and a formatted population axis that converts units to billions. The chart includes a title, an "xTitle" label, and gridlines styled via the `tickSize` method.