This visualization shows a world map highlighting countries as the source of immigrants to the US in 2019, using a natural Earth projection. The map renders countries in green with hover effects that turn them orange, while a light blue sphere represents the globe. Built with D3 v5, it loads GeoJSON and TSV data from the world-atlas package, using `d3.geoPath` and `geoNaturalEarth1` for projection, and `topojson.feature` to convert TopoJSON into GeoJSON features.