This example presents a horizontal bar chart showing population by country, with each bar’s length encoding the population value and country names on the y-axis. The chart uses React to render SVG elements, with scales and axes created via d3.scaleBand and d3.scaleLinear. Data is loaded asynchronously from a CSV file using d3.csv, and population values are formatted using d3.format to display compact labels like billions. The visualization includes axis labels, tick marks, and styled bars with distinct colors.