A horizontal bar chart displays the population of the top 10 countries in the year 2000, sorted with the largest population at the top. Each blue bar represents a country’s total population, with the x-axis formatted in billions and the y-axis listing country names. The visualization uses D3 v7 with an SVG rendering approach, employing `d3.scaleLinear` for the x-axis, `d3.scaleBand` for the y-axis, and `d3.axisBottom` with a custom tick format. Data is loaded asynchronously from a remote CSV file using `d3.csv`.