<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.wanasayansi ambao wamekuwa wakitafuta jibu la swali hilo kwa miongo mingi, sasa wanafikiri wamepata jawabu.  <response>: social scientists have been researching that question for decades and have come up with solid answers. 