This horizontal bar chart visualizes the population of the top 20 countries for the year 2000, using a log-scaled x-axis that formats tick labels from millions to billions. Built with D3 v7, the visualization constructs linear scales and band scales to map population values and country names to SVG rectangles. The chart renders light green bars on an SVG canvas, with axes labeled “POPULATION-2010” and “Countries,” sourced from a CSV file fetched via d3.csv.