 Xigashada Sawirka, Getty Images Qoraalka sawirka, Dadweynaha Framingham, Massachusetts, ayaa laga sameeyay daraasaddii ugu muddada dheereyda dunida ee wadnaha Tusaale ahaan, daraasadda Framingham ayaa lagu sheegay in miisaanka qofka uusan saameyn ku yeelan qof deriskiisa ah oo cayilan haddii uusan la lahayn xiriir dhow. 