This example visualizes world population by year from 1950 to 2015, using a filled area chart to emphasize the steady upward trend in billions. The SVG rendering is driven by D3 v5, employing `d3.scaleTime` for the x-axis, `d3.scaleLinear` for the y-axis, and the `d3.area` generator with a `curveBasis` interpolation to smooth the path. Axis labels and tick formatting are handled through `d3.axisBottom`, `d3.axisLeft`, and `d3.format` with abbreviations. Data is loaded as CSV from the provided dataset.