This example visualizes asylum seekers departing from countries worldwide, with a choropleth map coloring each nation by the number of departures for a selected year. It uses a natural Earth projection via `d3.geoPath` and `d3.geoNaturalEarth1`, with data loaded from a TopoJSON world atlas and a local asylum JSON file. A threshold color scale and `d3.legendColor` display the legend, while a slider updates the displayed year and re-renders the map with `d3.queue`.