Customizing Axes
This example displays a horizontal bar chart of the top 10 most populous countries, using 2018 population estimates from the United Nations World Population Prospects. It demonstrates D3 axis customization, changing tick formatting (converting large numbers to abbreviations like "B" for billion), removing default axis lines, and styling tick text, labels, and titles. The visualization is built with D3 v5, using `scaleLinear`, `scaleBand`, `axisLeft`, and `axisBottom` to construct the scales and axes, and loads data from a CSV file.