This example demonstrates how to customize axes in a bar chart showing population by country. The code loads data from a CSV file and uses D3 v5's `scaleLinear`, `scaleBand`, `axisLeft`, and `axisBottom` to generate the scales and axes within an SVG. It renders horizontal bars, with the y-axis listing country names and the x-axis displaying population values. The `csv` function parses the data, and the chart is structured with explicit margins and a grouped `<g>` element for positioning.