 <translate> The relevant information is: The Great Plains (sometimes simply "the Plains") is the broad expanse of flat land (a plain), much of it covered in prairie, steppe, and grassland, that lies west of the Mississippi River tallgrass prairie states and east of the Rocky Mountains in the United States and Canada. Therefore, the final answer is the Mississippi River tallgrass prairie states and east of the Rocky Mountains. <yor> Alaye ti o yẹ ni: Awọn pẹtẹlẹ Nla (nigbakan nìkan "awọn pẹtẹlẹ") jẹ agbegbe ti o gbooro ti ilẹ pẹtẹlẹ (alapin kan), pupọ ninu rẹ ti a bo ni igbo, steppe, ati koriko, ti o wa ni iwọ-oorun ti Odò Mississippi awọn ipinlẹ igbo giga ati ila-oorun ti awọn Oke Rocky ni Amẹrika ati Kanada. Nítorí náà, ìdáhùn tí ó gbẹ̀yìn ni pé àwọn ìpínlẹ̀ adágún odò Mississippi àti ìlà-oòrùn àwọn Òkè Rocky. 