Below is a Chart and list of countries’ GDP, ranked according to the economic activity of each country. The United States has the world’s largest economy, measured by nominal GDP, followed by China, the second largest, with annual growth consistently outpacing that of the United States. It may take only a few more years for China to claim the top position. However, it faces significant challenges such as an aging population, environmental degradation, and the impact of the Wuhan virus. Other major contributors to global GDP include Japan, Germany, the United Kingdom, India, and France.