This visualization displays the growth of world population over time, using an area chart to emphasize the magnitude of the increase. The chart is rendered as a single filled path with a smooth basis curve, created using D3 version 5's `area` and `curveBasis` functions. The code loads CSV data from a remote source, parses the year as a date object, and scales the population values linearly. Axis ticks and labels are generated with `axisLeft` and `axisBottom`, with gridlines drawn across the plot area.