This stacked horizontal bar chart visualizes the distribution of age groups across different continents, with each bar representing a continent and segments colored by age bracket. The visualization uses a D3.js v7 SVG rendering with `d3.stack()` to compute the stacked segments, `d3.scaleOrdinal()` for color mapping, and `d3.scaleBand()`/`d3.scaleLinear()` for axes. Tooltips, implemented via mouseover events, display the exact percentage for each segment, with x-axis labels indicating percentage values. Data is loaded from a CSV file containing pre-calculated proportions per continent.