This dashboard visualizes diabetes prevalence trends across the United States, combining a 2021 choropleth map of state-level percentages with a multi-line chart showing annual age-group trends from 2000 to 2022. The map uses `d3.geoAlbersUsa` projection and `d3.geoPath` to render state boundaries, with a sequential blue color scale mapping percentage values from a CSV; states lacking data appear grey. The line chart uses `d3.scaleBand` and `d3.scaleLinear` axes, plotting four age cohorts as separate colored lines and circles via `d3.line` and `d3.append('circle')`. Data comes from external CSV and GeoJSON sources, rendered entirely with SVG.