This interactive bubble chart visualizes the correlation between a country’s GDP per capita, life expectancy, and population using data from Nation_General.csv. The plot positions each country along the x-axis for GDP per capita and y-axis for life expectancy, with bubble radius encoding population size. Hovering over a bubble changes its fill color from steelblue to orange. The visualization uses d3.csv for data loading and D3 scales (scaleLinear, scaleSqrt) with axes, labels, and mouse event handlers to build the SVG-based chart.