Customizing Axes with D3.js!
This bar chart displays the populations of the top 10 most populous countries, based on 2018 estimates from the United Nations World Population Prospects. Using D3.js v5, the visualization employs `d3.scaleLinear` for the x-axis and `d3.scaleBand` for the y-axis, with `d3.axisLeft` and `d3.axisBottom` generating the axes. The chart customizes the x-axis tick labels via `tickFormat` to abbreviate large numbers, converting gigabytes notation to billions. Data is loaded from a CSV file and rendered as SVG rectangles filled with steelblue.