This area chart visualizes the population growth rate in Nepal over time, using a maroon-filled path to show the trend. The code loads CSV data and renders an SVG using d3.csv, d3.scaleTime, d3.scaleLinear, d3.area with curveBasis, and d3.axisBottom/axisLeft, including gridlines and labeled axes. The y-axis formats values in billions, and the chart includes a title and rotated axis label.