This area chart visualizes the stock prices of Amazon and Tesla over time, with the y-axis representing price and the x-axis representing year. The chart uses two filled areas with linear gradients—steel blue for Amazon and orange for Tesla—to highlight the trends and compare the two companies' performance. The visualization is built with D3.js v7, loading data from a CSV file containing oil price and stock price data, and rendering as an SVG. Axes are scaled using `d3.scaleLinear` and `d3.extent`, while the areas are generated with `d3.area`.