This interactive visualization combines a world map of bubble markers with a linked time-series histogram, allowing users to brush over a date range to filter the geographic data. It plots migrant deaths and disappearances from a global dataset, with bubble size scaled by the square root of the count using `d3.scaleSqrt`. The map uses `d3.geoNaturalEarth1` and `d3.geoPath` with TopoJSON world atlas data. Brushing is implemented with `d3.brushX`, and the React components re-render filtered circles accordingly. The histogram is built with `d3.bin` and `d3.timeMonths`.