This visualization displays world population by country using a horizontal bar chart rendered with SVG. The chart uses a linear scale for population values and a band scale for country names, with axes generated by `d3.axisLeft` and `d3.axisTop`. Data is loaded from a CSV file and parsed with `d3.csv`, then bars animate their widths via `transition`. The code applies a steelblue fill to all rectangles and uses `d3.scaleLinear` and `d3.scaleBand` for scaling.