The Barchart
This horizontal bar chart displays the populations of the world's top ten most populous countries, using D3 v5's scaleBand and scaleLinear APIs to map country names and population values to SVG rectangles. The chart includes grid lines, axis labels, and tick formatting that abbreviates large numbers (e.g., converting millions to “B”). The data is loaded from a CSV file containing country names and population figures, and the visualization is rendered as vector graphics in an SVG canvas.