This interactive bubble chart visualizes the correlation between birth rate, life expectancy, and GDP for fourteen countries. Each bubble's position encodes life expectancy (x-axis) and birth rate (y-axis), while its size reflects GDP and its color categorizes the country. Hovering over a bubble reveals its name. Built with D3 v7, the visualization uses `d3.scaleLinear` for axes and bubble size, `d3.scaleOrdinal` for color mapping, and `d3.cs` to load the `bubblechart.csv` data. A legend clarifies the GDP scale, and a tooltip appears on mouseover.