This interactive visualization combines a world map of migrant deaths with a linked time-series histogram. Users brush over the date histogram to filter the map’s bubble marks, which encode the total dead and missing per location. The map uses `d3.geoNaturalEarth1` with `d3.geoPath` for land, graticules, and interiors, while the histogram uses `d3.brushX` and `d3.bin`. React hooks like `useMemo` manage scales and filtered data, with data sourced from a CSV of missing migrants.