This area chart visualizes the change in world population over time, with a smooth, curved line filling the space beneath it in blue. The chart uses a time-based x-axis and a linear y-axis, with a grid provided by axis ticks. Built with D3 v5, the code employs `scaleTime`, `scaleLinear`, `axisLeft`, `axisBottom`, and `area` with a `curveBasis` to render the SVG path. The data originates from the United Nations World Population Prospects 2017 dataset.