ers . ▁These ▁N atives ▁of ▁which ▁so ▁little ▁was ▁recorded ▁were ▁the ▁first ▁inhabitants ▁of ▁the ▁region ▁long ▁before ▁they ▁were ▁ex termin ated ▁by ▁the ▁Spanish ▁colon ists . ▁Today , ▁only ▁a ▁few ▁remain ▁of ▁the ▁Te pe hu anos , ▁Hu ich oles , ▁Cor as ▁and ▁Tar ah um ara ▁tribes . ▁ ▁There ▁is ▁an ▁opinion ▁which ▁assumes ▁that ▁Mes o amer ican ▁cult ures ▁would ▁have ▁migr ated ▁north ward . ▁Hence ▁O asis amer ica ▁would ▁be ▁a ▁branch ▁of ▁neighbor ing ▁southern ers . ▁In ▁that ▁regard , ▁the ▁development ▁of ▁O asis amer ican ▁cult ures , ▁such ▁as ▁those ▁from ▁northern ▁Mes o amer ica , ▁would ▁have ▁been ▁related ▁to ▁groups ▁originally ▁inhab iting ▁western ▁Mexico . ▁Arch ae ological ▁evidence ▁suggests ▁an ▁affili ation ▁with ▁u to - nah ua ▁groups ▁would ▁have ▁taken ▁agricult ure ▁to ▁the ▁O asis amer ican ▁region . ▁Although ▁agricult ural ▁techniques ▁were ▁imported ▁from ▁the ▁south , ▁O asis amer ican ▁villages ▁built ▁a ▁civil ization ▁with ▁particular ▁characteristics , ▁that ▁maintained ▁relations ▁with ▁Mes o amer ica ▁far mers . ▁ ▁Must ▁remember ▁that ▁Dur ango ▁is ▁at ▁the ▁south ▁border ▁of ▁the ▁M og oll on ▁– ▁An as azi ▁cult ures ▁influence ▁area ▁ ▁Site ▁Investig ation ▁ ▁Spanish ▁expl oration ▁began ▁in ▁ 1 5 3 1 ▁with ▁the ▁Nu ño ▁de ▁Gu zm án ▁expedition . ▁In ▁the ▁following ▁dec ades , ▁especially ▁under ▁the ▁command ▁of ▁Francisco