This area chart visualizes world population by year, with the data sourced from a CSV file and rendered as a filled path with a smooth curve. The visualization uses D3 v5’s `scaleTime`, `scaleLinear`, `area`, `curveBasis`, and `axisBottom`/`axisLeft` components to map years to the x-axis and population values to the y-axis, with formatted tick labels like “B” for billions. A title and axis labels are added via SVG text elements, and the chart is styled with CSS classes for the maroon fill and sans-serif fonts.