This area chart displays world population growth over time, with the x-axis representing time and the y-axis representing population in billions. The chart uses a filled area path to emphasize the magnitude of population change. Built with D3 v5, it loads data from a CSV file and uses `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and the `area` generator with a basis curve to render the SVG. Axis grid lines and labels are styled via CSS, with tick labels formatted to abbreviate large numbers.