A choropleth map displays waste tonnage (DEEE) across French departments for each year selected via a slider, with color intensity encoded by d3.scaleQuantize and hover tooltips. The visualization updates GeoJSON feature values per year and renders them using d3.geoConicConformal, d3.geoPath, and SVG. Data comes from a CSV on data.gouv.fr, filtered by waste type, while department boundaries use a simplified France GeoJSON from GitHub.