This stacked bar chart shows the proportion of global internet users across six regions—Africa, Asia, Europe, North America, South America, and Oceania—from 2015 to 2019. Using d3.v7 and SVG, it stacks yearly percentage values per region via `d3.stack()`, with bars colored by year through `d3.scaleOrdinal()`. The visualization includes axes generated by `d3.axisBottom()` and `d3.axisLeft()` with percentage formatting, plus a clickable legend. Data comes from the included `internet-users.csv` file, and clicking a bar alerts the region, year, and percentage.