This bar chart displays the populations of ten countries, using horizontal bars ordered by country name. The example demonstrates customizing D3 axes by formatting population ticks with the `format('.3s')` API (abbreviating values like “1.41B”) and removing default axis lines. It also applies gridlines via `tickSize` and uses `scaleLinear` and `scaleBand` for scales. Data loads from a CSV file, and the visualization renders as SVG elements with styles from an external stylesheet.