Answer:
The economy of the Western United States is an economy characterized by its productive diversity. The West expands from San Diego to the south to Seattle to the north, and from the Pacific Ocean to the Rocky Mountains in the east. These limits give an account of the extension of this region and its climatic diversity, which generates different parameters regarding the economic production of the area.
Thus, in the southern part of California (from San Diego to San Francisco, including Los Angeles and Silicon Valley) the economy revolves around industrial and technological production, services, commerce and tourism. The same happens in the far north, in the city of Seattle, Washington. In the middle, areas like Northern California are exploited in livestock production, and areas of Texas bordering the Great Plains produce large amounts of wheat.
In short, the Western economy is highly diversified and self-sufficient (California alone could be the 8th economy in the world).