Two D3.js v7 charts explore COVID-19’s demographic impact from a CSV dataset loaded via `d3.csvParse`. A pie chart aggregates confirmed cases by WHO region using `d3.pie`, `d3.arc`, and an ordinal color scale, with an HTML legend listing counts. A second SVG chart displays grouped bars for the top ten countries, comparing confirmed, death, and recovered cases via a linear scale, band scale, and `d3.axisBottom`/`d3.axisLeft`. Both visuals use SVG rendering and rely on color-coded legends for interpretation.