This horizontal bar chart displays the population of ten countries, ranging from China at the top with over 1.4 billion people to Mexico at the bottom with approximately 130 million. It uses D3's `scaleLinear` and `scaleBand` to map population values and country names to the SVG canvas, with `axisLeft` and `axisBottom` generating the axes. The code loads data from a CSV file via `csv` and renders steelblue rectangles, with an explicit `+d.population * 1000` conversion to reflect full population figures.