This horizontal bar chart displays the population of five countries, using a steelblue fill for each bar. The chart is rendered as an SVG using D3 v5, with linear scaling for the population axis and band scaling for the country labels. The code reads data from a CSV file and includes interactive features: hovering over a bar reveals a tooltip with the country and population, and clicking triggers a popup alert. The visualization also supports configurable axis labels and optional grid lines.