This interactive choropleth map visualizes US state economic performance metrics across four selectable time periods. Users can toggle between 1-year, 5-year, since-1991, and latest-period data via a dropdown menu. The map uses D3.js v7 with TopoJSON to render geographic boundaries via `d3.geoPath` and a `geoAlbersUsa` projection, while `scaleSequential` and `scaleDiverging` color scales encode metric values. Hover tooltips display state details, and clicking a state opens a side panel with additional information.