This area chart displays the average life expectancy by year, with the area filled in orange beneath a curved line. The visualization uses D3 version 5’s `scaleTime`, `scaleLinear`, `area`, and `curveBasis` to smooth the data, while `axisLeft` and `axisBottom` render the labeled axes. Data is loaded from a CSV file hosted in a GitHub gist, and the SVG output includes a red title and purple axis labels.