This bubble chart shows the correlation between birthrate, life expectancy, and GDP for 14 countries. The visualization uses animated SVG circles positioned by a linear scale for each axis, with bubble size and color encoding GDP via d3.scaleLinear and d3.scaleOrdinal with interpolateTurbo. A hover tooltip displays each country’s name using D3 event handlers, while a legend explains the GDP scale. The chart is implemented with d3.csv loading, axis generators, and data binding through `join`.