Which wind system causes most of the weather movement across the United States? trade winds prevailing westerlies jet stream

The wind system that causes most of the weather movement across the United States is the **prevailing westerlies**. ### Explanation: 1. **Trade Winds**: These winds blow from east to west in the tropics and are primarily responsible for weather patterns in tropical regions, not significantly affecting the continental U.S. 2. **Prevailing Westerlies**: These winds blow from west to east in the mid-latitudes, which includes much of the continental United States. They are responsible for the movement of weather systems across the country. 3. **Jet Stream**: While the jet stream is a fast-flowing air current in the atmosphere that can influence weather patterns, it is a part of the prevailing westerlies and is not a separate wind system. In summary, the prevailing westerlies are the primary wind system that drives weather movement across the United States.