This example combines a world map and a time-series histogram to visualize migrant deaths and missing persons. The map uses a natural Earth projection via `geoNaturalEarth1` and `geoPath`, with circle sizes scaled by the square root of fatalities, while the histogram bins monthly totals. A brush on the histogram filters the map’s circles interactively. Data comes from a CSV of Missing Migrants records, and rendering uses React with SVG and D3 v5 scales, axes, and the `brushX` API.