This example demonstrates how to construct a basic bar chart from a CSV dataset of national populations. It visualizes the population values for ten countries, with bar heights corresponding to the data. The implementation uses D3 v5 to load the data with `d3.csv`, scales and axes are created via `d3.scaleBand` and `d3.scaleLinear`, and the SVG is rendered through the `d3.svg` API. The chart is drawn with D3's SVG helpers rather than a separate plotting library.