This parallel coordinates visualization displays survey data on happiness and organizational membership across multiple countries. Gray background lines provide context, while steel-blue foreground lines represent individual countries. Users can drag axes to reorder dimensions and brush along axes to filter the displayed countries. The implementation uses D3 v3 with `d3.svg.axis`, `d3.svg.line`, `d3.behavior.drag`, and `d3.svg.brush`, rendering the interactive chart as SVG with animated transitions during drag operations.