A bar chart displays population values for five countries, with each bar’s height corresponding to its data point. The visualization uses an SVG canvas with axes that include horizontal and vertical gridlines. The code employs D3 v5’s `scaleBand` for the x-axis, `scaleLinear` for the y-axis, and `d3.axisBottom`/`d3.axisLeft` to render ticks. Data is loaded from a CSV file, formatted with thousands separators, and drawn as steelblue rectangles.