This area chart visualizes world population over time, using a filled path to emphasize the magnitude of growth across the years. The data is loaded from a CSV file provided by Curran, with population values parsed as numbers and years as dates. Built with D3 v5, the visualization uses `d3.area` with a basis curve, `scaleTime` for the x-axis, and `scaleLinear` for the y-axis, which formats values in billions. Axes are customized with grid lines and rotated labels, and the chart includes a title and axis annotations.