This area chart displays India’s population over time using data from a CSV file loaded via `d3.csv`. The SVG visualization uses `d3.area()` to generate a steelblue filled path, with linear scales (`d3.scaleLinear`) mapping years and population values. Axes are rendered using `d3.axisBottom` and `d3.axisLeft`, with formatted tick labels and axis titles. The chart is positioned within margins, and the data values are converted to numbers before rendering. The example demonstrates loading external data and building a basic area chart entirely with D3 v7.