The Willamette Valley was a fertile farming area that attracted migrations to which western region?

The Willamette Valley attracted migrations to the western region of the United States, specifically the state of Oregon. To find this answer, you can follow these steps:

1. Start by understanding the context of the question. The question mentions the Willamette Valley, which indicates that it is a specific location or region.
2. Use a search engine or an online encyclopedia to learn more about the Willamette Valley. Search for terms like "Willamette Valley" or "Willamette Valley Oregon."
3. Look for information about the Willamette Valley's attributes, especially its relevance to migration and agriculture. This information can usually be found in the introduction or main body of an article.
4. Read about the Willamette Valley's history and its significance in attracting settlers and migrants due to its fertile agricultural land.
5. Identify the specific western region that the Willamette Valley attracted migrations to. In this case, the answer is Oregon.

By following these steps, you can gain a better understanding of the topic and find the answer to the question.