This example demonstrates how to build a horizontal bar chart from a CSV dataset using D3 version 6. The chart displays the `detailnumber` values for each country, with blue rectangles sized proportionally to the data. The code uses `d3.csv` to load the dataset, `d3.scaleLinear` for the x-axis, and `d3.scaleBand` for the y-axis positioning. The SVG is pre-selected, and the `enter()` selection appends the rectangles directly to the rendered chart.