This interactive scatterplot explores relationships between economic and health indicators across countries, with dropdown menus on the X and Y axes allowing selection from fourteen attributes such as GDP, life expectancy, and mortality rates. Built with React and D3 v5, it uses scaleLinear for axes, renders SVG circles via the Marks component, and loads CSV data from a gist. Axis components format tick labels using d3.format, while the dropdown library updates state to re-scale the visualization.