All of the above are true

LOWA is the state which is bordered by the Mississippi River on the east , the Missouri River and the Big Sioux River on the western side .
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Answer:
In a <u>u</u><u>n</u><u>i</u><u>t</u><u>a</u><u>r</u><u>y</u> state, smaller member states agree to participate in forming a larger state.