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Iowa: Map, History and Much More from Answers.com (7164 words) |
 | Iowa, located in the center of the Midwest in the north-central region of the continental United States, is characterized by its gently rolling terrain and bountiful agriculture. |
 | Iowa is bordered on two sides by rivers; the Mississippi separates it on the east from Wisconsin and Illinois, and the Missouri and the Big Sioux separate it on the west from Nebraska and South Dakota. |
 | Iowa is bordered by Minnesota on the north; Nebraska and South Dakota on the west; Missouri on the south; and Wisconsin and Illinois on the east. |
| Missouri River: Definition and Much More from Answers.com (2927 words) |
 | River, central U.S. The longest tributary of the Mississippi River, it rises in the Rocky Mountains of southwestern Montana. |
 | The Yellowstone and Platte rivers are the Missouri's chief tributaries. |
 | The entire Missouri River watershed was acquired from the French by the United States in 1803 as part of the Louisiana Purchase and explored by the Lewis and Clark Expedition, which successfully used the river in exploring for a route to the Pacific Ocean. |