This scatterplot visualizes the relationship between birth rate, calling code, and infant mortality across countries using the world-data-2023 dataset. Each circle’s x-position maps to birth rate, its y-position to calling code, and its radius encodes infant mortality, colored uniformly in teal. Built with d3.v6, the code uses `d3.scaleLinear`, `d3.extent`, `d3.axisBottom`, and `d3.axisLeft`, appending SVG circles via `d3.select` and `.join`. The data is loaded from a remote CSV using `d3.csv`, with hover events logging data to the console.