This pie chart visualizes population distribution across rural areas using data loaded from a CSV file. Each slice represents an area with its total population, labeled with the area name. The chart is rendered with SVG and animated using D3 v4’s transition.attrTween to grow the arcs from zero to their final angles. Colors are assigned via d3.scaleOrdinal, and the pie and arc generators (d3.pie, d3.arc) compute the geometry. Labels are positioned using labelArc.centroid.