This example shows a bar chart of GDP in billion USD for various countries in 2024. The bars are sorted in descending order and colored a uniform blue, with a tooltip revealing each country's exact value. The visualization is rendered as an SVG using D3 v7. The code loads data from a CSV file, processes it with `d3.csv`, and uses `d3.scaleBand` and `d3.scaleLinear` to map country names and GDP values to positions. Axes are drawn with `d3.axisBottom` and `d3.axisLeft`, with rotated country labels for readability.