This document analyzes the economic relationship between China and the United States. It discusses how China has rapidly grown to become a global economic power on par with the US. While the US previously dominated global trade and GDP, China has seen strong growth and may surpass the US economy by 2020. The analysis examines trade flows, GDP trends, and the impacts of China joining the World Trade Organization. It also considers cultural and political differences between the democratic US and communist China, and how both countries must adapt to each other for mutual economic benefit in the globalized world.