<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.anthropolojia ya kimarekani katika miaka ya 1940 na 1950,tafiti kadhaa muhimu zimelengwa kwenye namna biashara baina ya watu wenyeji asilia na wazungu kutoka ulaya ambao walikuwa wametawala amerika na kuathiri utamaduni wa kienyeji kupitia kwa mabadiliko katika mipanglio ya kazi au kupitia kwa mabadiliko katika teknolojia muhimu.  <response>: in the 1940s and 1950s, several key studies focused on how trade between indigenous peoples and the europeans who had conquered and colonized the americas influenced indigenous culture, either through change in the organization of labor, or change in critical technologies. 