This area chart visualizes monthly sales data as a smooth, curved region. The chart uses a basis spline curve to connect sales values across months, with the area beneath the curve filled to emphasize trends. Rendered as SVG, it employs D3 v5 APIs including `scalePoint`, `scaleLinear`, `axisBottom`, `axisLeft`, `area`, and `curveBasis`. The data is loaded from a remote CSV file, with sales values parsed from the "Sales (USD 000)" column. Axis labels and a title are added as text elements.