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Visal Refusals Choropleth Map
A choropleth world map visualizes visa refusal rates by country for 2019, with a yellow-orange-red sequential color scale indicating increasing refusal counts and gray for missing data. Built with React and D3 v5, it uses `geoAzimuthalEqualArea` for projection, `geoPath` for rendering country boundaries, graticules, and sphere outlines, plus `scaleSequential` with `interpolateYlOrRd` for coloring. Country codes are matched from ISO data, and country shapes come from World Atlas TopoJSON.
AI-generated descriptionA world map showing cities with population greater than 50,000. City data from Simplemaps: World Cities Database.
Country boundaries from World Atlas TopoJSON, polished for visual style, including graticules.