This visualization shows the change in house prices over time, plotting yearly data points connected by a line to reveal the overall price trend. Using D3 v5, the code imports specific modules like `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and `line` to construct the chart. Data is loaded from an external CSV file, with cost values converted to numbers and years to JavaScript Date objects. The SVG output includes labeled axes with gridlines, a rotated y-axis label, and a bold title, all styled through external CSS.