This example shows a horizontal bar chart comparing the population of 20 countries, using data from a CSV file. The chart displays population values on the x-axis and country names on the y-axis, with a label indicating the data represents 2010 populations. The visualization is built with React and D3 v5, using `scaleBand` for the categorical y-axis, `scaleLinear` for the quantitative x-axis, and SVG rect elements to render the bars. Tooltips are implemented using native SVG title elements, showing formatted population values in billions.