This visualization displays stacked bar charts comparing population projections for the top five countries in 2023, 2030, and 2050. The chart uses D3.js v7 to load CSV data, sort by population, and generate a stacked layout with color-coded segments per year. Hovering a bar turns it red, while clicking shows the exact population value via an alert. The SVG rendering includes axes for country names and population counts, with data sourced from a GitHub-hosted CSV file.