This bar chart displays the top 10 most populous countries, using horizontal bars ordered by population. The chart customizes axes by applying a tick format that abbreviates large numbers (converting G to B) and removing domain lines for a cleaner look. Built with d3.csv, d3.scaleLinear, d3.scaleBand, d3.axisLeft, and d3.axisBottom, it renders to SVG and includes labeled axes and a title.