This line chart shows BMW sales by region from 2018 to 2022, comparing Europe, USA, Asia, and Other Regions with color-coded lines and data point circles. Built with D3.js v7, it uses d3.line with curveMonotoneX, d3.scaleLinear for both axes, and d3.axisBottom/axisLeft with grid lines. A legend identifies each region, while simulated sales data is rendered as an SVG with responsive dimensions.