This area chart visualizes world population growth over time, mapping years to the x-axis and population counts to the y-axis with a smooth, curved area fill. The SVG rendering uses D3 v5’s `scaleTime`, `scaleLinear`, and an `area` generator with `curveBasis` to create the shape, while `axisBottom` and `axisLeft` add labeled ticks. Data comes from a CSV file of world population by year, with axes formatted to abbreviate large numbers (e.g., billions).