This horizontal bar chart displays the population of the ten most populous countries, with China and India leading significantly. The chart uses D3 v5 to load data from a CSV file, scales the population values by a thousand, and renders the bars as SVG rectangles. Axes are created using `d3.axisBottom` and `d3.axisLeft`, with population labels formatted using `d3.format` to abbreviate large numbers. Gridlines and chart labels are styled via CSS, and the visualization is presented with a clean, minimal aesthetic.