This interactive D3.js visualization explores world country income and energy data, comparing GDP per capita against purchasing power parity through a scatterplot of point marks. Users navigate five design stages that progressively add categorical region hues, quantitative population sizing, and intentionally broken then repaired chart configurations. The visualization uses SVG rendering with animated transitions, D3 scales for logarithmic and linear axes, and a color legend mapping regional categories. Data loads from a CSV file containing country-level income, population, and region attributes, with tooltips and summary statistics supporting the analysis.