This interactive parallel coordinates chart displays survey data on happiness and organizational membership across countries. Each vertical axis represents a dimension like Happiness or Religious group participation, with polylines connecting values for each country. Users can brush along axes to filter the data, and drag dimension labels to reorder them, with smooth animations during transitions. Built with D3 v3, the visualization uses SVG paths for the lines and backgrounds, plus the `d3.svg.brush` API for the brushing interaction and `d3.behavior.drag` for axis reordering. The data comes from a CSV file with null values handled gracefully.