This example displays a bar chart of the top 10 most populous countries using data from a CSV file, with population values in thousands rendered as circles on a linear scale. The code customizes both axes by removing default domain lines, adding truncated tick labels formatted with d3.format (e.g., changing G to B for billions), and extending tick lines across the chart via tickSize. It uses d3.csv, scaleLinear, scalePoint, axisLeft, and axisBottom in D3 v5, with an SVG rendered scatter-style layout.