This example shows historical space launch sites as red circles on an equal-earth projection map, with circle size scaled by the number of launches per site. A linked date histogram with a brushed time range filters the map to show only launches within the selected period. The visualization is built with React and D3 v7, using `geoEqualEarth` and `geoPath` for the map, `scaleSqrt` for circle sizing, and `brushX` for the interactive date filter. Data comes from a CSV of historical launches and world atlas TopoJSON.