This choropleth map shows confirmed COVID-19 cases per department in Argentina, using a logarithmic color scale from light yellow to dark purple. Built with D3 v5 and topojson, it loads a TopoJSON file containing department boundaries and case counts, then renders each department as an SVG path via `d3.geoPath` with a transverse Mercator projection. The map includes zoom interaction and a vertical legend with a gradient color bar and axis ticks at powers of ten, while tooltips display department, province, and case totals on hover.