is an instance of: American state.

has as a part: Davenport | Cedar Rapids | Clinton | capital of Iowa, Des Moines | Dubuque | Mason City | Ottumwa | Sioux City | Little Sioux River.

is a part of: Corn Belt | middle west, Midwest, midwestern United States | America, the States, U.S., U.S.A., United States, United States of America, US, USA.