This choropleth map visualizes the share of the population infected with HIV/AIDS per 100 people in 2017, using a sequential yellow-to-red color scale to indicate infection rates across countries. The visualization loads world geometry from a TopoJSON file, joins it with HIV data from a CSV file, and maps country codes to numeric identifiers for accurate matching. Built with React and D3 v5, the map uses geoNaturalEarth1 and geoPath for geographic projections, while countries lacking data appear in gray. The color scale is created with interpolateYlOrRd and scaleSequential.