This example displays a scatterplot of the world-data-2023 dataset, plotting each country’s birth rate against its calling code, with the radius of each circle representing infant mortality. The visualization uses D3 v4’s `d3.csv` to load the remote data, then builds scales with `d3.scaleLinear` and renders circles and axes using SVG selection methods like `append` and `call`. The data is sourced from a GitHub-hosted CSV file, and the chart is rendered as static SVG with a fixed color fill.