Ka taƙaita labarin:  Ana kasuwanci tsakanin Gabashin Asiya da Sabon Duniya ƙarnuka da yawa kafin Christopher Columbus ya isa yankin a shekara ta 1492. Wannan bisa ga jerin kayan aikin tagulla da aka samo a wurin 'Rising Whale' a Cape Espenberg, Alaska. Masana ilimin kimiyyar kayan tarihi sun gano abin da suka yi imani da shi ya zama tagulla da ƙuƙwalwar fata da ƙwanƙwasa tagulla, wanda ya kasance kusan A.D. 600. An soma kasuwanci tsakanin Gabashin Asiya da Sabon Duniya ƙarnuka da yawa kafin Christopher Columbus (a hagu) ya zo a shekara ta 1492. An gano ganowar ne bayan da masu binciken ilimin kimiyya suka gano abin da suka yi imani da shi na tagulla da fata (dama), wanda ya kasance a kusa da AD 600. Ba a ci gaba da yin aikin tagulla a wannan lokacin a Alaska ba, kuma masu bincike a maimakon haka sun yi imanin cewa an ƙirƙiri kayan aikin ne a China, Koriya ko Yakutia. 'Muna ganin mu'amala, kai tsaye kamar yadda suke, tare da waɗannan da ake kira' manyan wayewa 'na China, Koriya ko Yakutia,' Owen Mason, wani abokin bincike a Jami'ar Colorado, ya gaya wa WordsSideKick.com. 'Mazaunan arewacin Amirka da ke arewa maso gabashin duniya sun yi amfani da jan ƙarfe da kuma ƙarfe da aka samo daga taurari don su yi abubuwa dabam-dabam,' in ji rahoton da rukunin masu bincike suka wallafa a dandalin Arctic Research Consortium. '[Amma] babu tabbaci game da narkar da ƙarfe, ko kuma haɗa ƙarfe a Yammacin Hemisphere a arewacin Mexico kafin zuwan Turawa. Ba a ci gaba da aikin tagulla a wannan lokacin a Alaska ba, kuma masu bincike sun yi imanin cewa an ƙirƙiri kayan aikin ne a China, Koriya ko Yakutia. Masu binciken sun yi imanin cewa mutanen da ke zaune a wurin da ake kira Rising Whale na iya zama wani ɓangare na abin da masana kimiyya ke kira al'adun 'Birnirk'. "A sakamakon haka, wadannan abubuwa guda biyu sun ba da mafi kyau kuma mafi ƙarancin tabbaci har zuwa yau cewa ƙananan ƙarfe masu ƙarancin ƙarfe masu ƙarancin ƙarfe sun isa Alaska ta hanyar cinikin prehistoric a fadin Bering Strait". Masu bincike sun yi imanin cewa mutanen da suka zauna a wurin da ake kira Rising Whale na iya zama wani ɓangare na abin da masana kimiyya ke kira al'adun 'Birnirk'. Wannan shi ne...
Ƙarƙashin tagulla da ƙaho daga AD 600 da aka samo a Cape Espenberg. Amma aikin tagulla bai ci gaba ba a wannan lokacin a Alaska. Masana kimiyya sun yi imanin cewa an kirkiro kayan tarihi ne a China, Korea ko Yakutia. Site na iya zama gida ga al'adun 'Birnirk', waɗanda mutanen su suka yi tafiya a ɓangarorin biyu na Bering Strait.