This bubble chart visualizes the relationship between GDP, population, and life expectancy for 14 countries. Each circle’s x-position maps to GDP, y-position to population, and radius to life expectancy, with all values drawn from the included `bubblechart.csv` file. Hovering highlights a circle with a black stroke. The chart is built using D3 v7, employing `d3.scaleLinear` for axes and radius encoding, rendered as SVG circles, with axis labels generated via `d3.axisBottom` and `d3.axisLeft`.