This visualization displays US cancer cases from 2009 to 2022 using a combined line and area chart. The line emphasizes the trend over time, while the filled area beneath it highlights the magnitude of case counts. Data is loaded from an external CSV and rendered as SVG using d3.csv, d3.scaleLinear for both axes, d3.line with curveBasis for smoothing, and d3.area to generate the filled region. Axis formatting uses d3.axisBottom, d3.axisLeft, and d3.format with abbreviated tick labels.