Bar Chart
This bar chart visualizes the top 10 most populous countries using 2018 population estimates from the United Nations World Population Prospects 2017 dataset. Built with D3 v5, it renders an SVG with `scaleLinear` and `scaleBand` axes, setting custom tick formatting via `axisBottom` and removing default domain lines. The chart highlights customization of D3 axes, including a title, axis label, and population values formatted in billions. Data is loaded from a CSV file and appended as rectangles to the SVG.