This area chart displays global population growth from 1950 to 2020, using a shaded blue region to emphasize the upward trend. Built with D3.js v7, the code creates an SVG and uses `d3.area` to generate the area path, with `d3.scaleLinear` for the x and y axes. Axis ticks are added via `d3.axisBottom` and `d3.axisLeft`, while the data is plotted in millions, sourced from a hardcoded array of eight data points.