This bar chart displays the top 10 most populous countries, using D3.js v5 to render an SVG visualization. The chart customizes axes by removing the y-axis line and ticks, and by formatting x-axis tick labels from raw numbers into a compact "B" (billion) suffix using a custom tick format function. Country labels appear on the y-axis, while population values are represented by horizontal bars scaled with `d3.scaleLinear`. Data is loaded from a CSV file and parsed for the visualization.