This line chart displays the USA population from 2011 to 2021, with years on the x-axis and population in millions on the y-axis. The visualization uses D3 v5 with SVG rendering, loading CSV data from a GitHub gist. It employs d3.scaleTime and d3.scaleLinear for axes, d3.axisBottom and d3.axisLeft for tick marks, and d3.line to generate the red population curve. The chart includes a rotated y-axis label and gridlines created via tick sizes.