text: hilly regions called the interior uplands on the missouri-arkansas border is also called the _  _  _  _  _  _? the indianapolis colts will fly over a hilly rigion called the interior uplands on the missouri-arkansas border that most people call the   _  _  _  _  _  _.   ten points to whoever gets the right answer. please help ive been working on it for 3 hours and im dead now i think they are called 'the ozarks.'   ;-d could be, could be.