This line chart visualizes monthly sales growth from January 2021 through January 2025, showing a steady upward trend from 420 to 1,195 units. The chart is rendered as an SVG using D3.js v6, with a monotone-smoothed blue line and orange circular markers at each data point. The time-series data is loaded from a CSV file and parsed using `d3.timeParse`, with scales set via `d3.scaleTime` and `d3.scaleLinear`, and axes drawn using `d3.axisBottom` and `d3.axisLeft`. Rotated month labels and custom titles complete the visualization.