<prompt> Umbuzo: Ingabe izikhungo zokuhlala zasentshonalanga zathuthuka zaya ezindaweni ezomile, kwaba khona imililo yokuqala emikhulu. Imililo ye-Range eGreat Plains nemililo yehlathi e-Rocky Mountains yayinkulu kakhulu futhi ibhubhisa kakhulu kunalokho okwakuke kwabonwa empumalanga.  <response>: entshona 