This example combines a bubble map and a date histogram to explore the Missing Migrants Dataset. The map uses `d3.geoNaturalEarth1` and `d3.geoPath` to render country boundaries from World Atlas TopoJSON, with circle size scaled by the square root of deaths. The histogram below aggregates monthly totals using `d3.bin` and `d3.timeMonths`. Brushing the histogram with `d3.brushX` filters the map’s circles by date range, demonstrating linked views through React state.