
1) Region of Iowa 2) Region of Nebraska
Found on
https://www.crosswordclues.com/clue/siouxland

Siouxland is a vernacular region that encompasses the entire Big Sioux River drainage basin in the U.S. states of South Dakota, Minnesota, Nebraska and Iowa. A `vernacular region` is a distinctive area where the inhabitants collectively consider themselves interconnected by a shared history, mutual interests, and a common identity. Such regions .....
Found on
http://en.wikipedia.org/wiki/Siouxland
No exact match found.