A multi-line chart tracks home values over time for multiple regions, with each region’s path colored uniquely and labeled in a legend. The visualization uses D3.js (v3) with `d3.csv` to load `final_data_with_population.csv`, then groups the data by `RegionName` via `d3.group`. Lines are drawn using `d3.line` and scales from `d3.scaleLinear`; axes rely on `d3.axisBottom` and `d3.axisLeft`. The SVG output is generated inside a `draw()` function that appends to an existing `#chart` element.