This example shows the annual amount spent on military vehicles from 2013 to 2021 as a single red line chart. The visualization uses D3 v5 with SVG rendering, employing `scaleTime` and `scaleLinear` to map the parsed year and numeric amount values onto the axes. The data is loaded from a CSV file via `d3.csv`, and the line is drawn with the `line()` generator. Axis labels and gridlines are positioned using `axisBottom` and `axisLeft`, with custom tick formatting and margins.