This line chart displays the area in square kilometers for each U.S. state, using a categorical point scale for states and a linear scale for area values. The visualization loads CSV data from a GitHub gist and renders an SVG with axes, gridlines, and a red line path generated by `d3.line`. It employs `d3.scalePoint`, `d3.scaleLinear`, `d3.axisBottom`, `d3.axisLeft`, and `d3.csv` from D3 v5, with custom tick styling and rotated axis labels.