Iowa () is a state in the Midwestern United States. Its name comes from the Iowa River, which was named after the Ioway people, one of the Native American tribes that lived in Iowa. Iowa was a part of New France, but was sold to the United States as part of the Louisiana Purchase. Its settlers were mostly farmers: Iowa is part of the Corn Belt and is often known as the "Food Capital of the World." However, Iowa's landscape, culture, and economy are diverse, with the economy changing in the second half of the 20th Century to include many kinds of business.