This horizontal bar chart displays the population of the top 30 countries in the year 2020, sorted by their 2000 population values from a CSV dataset. The visualization uses d3.v7 with SVG rendering, employing `d3.scaleLinear` for the x-axis and `d3.scaleBand` for the categorical y-axis. Custom axis components format large numbers with abbreviations (e.g., "1.2B" instead of 1,200,000,000) and label the axes as "POPULATION-2020". Light green rectangles represent each country's population, with axes and labels generated programmatically via the D3 API.