This interactive stacked bar chart displays deaths from various illnesses in 2013, broken down by age range across selected South African countries, using WHO data. The visualization, rendered as an SVG with D3.js (v3), includes radio buttons that toggle between showing raw death counts and percentages of total illness. The chart uses `d3.layout.stack` for the stacked bars, `d3.scale.ordinal` for the x-axis, and a categorical color scale for the causes of death, with animated transitions between the two display modes.