Daraasad cusub oo xiriirisay addoonsigii taariikhiga ahaa iyo kala duwanaanshaha caafimaad ee casriga ah ee dalka Mareykanka
Published
Daraasad dhawaan ka soo baxday Jaamacadda California, Berkeley, ayaa shaaca ka qaaday xiriir muhiim ah oo u dhexeeya taariikhda addoonsiga ee dalka Mareykanka iyo natiijooyinka caafimaad ee dadka madowga ah ee Mareykanka maanta. Cilmi-baarayaashu waxay ogaadeen in heerarka dhimashada ee dadka madowga ah ay hadda ka sarreeyaan degmooyinka aad ugu tiirsanaa shaqada addoonsiga intii lagu jiray qarnigii 19-aad.
Cilmi-baaristan ayaa iftiimineysa sida dhacdooyinka taariikhiga ah ay u yeelan karaan saameyn fog oo ku timaada bulshada casriga ah. Iyadoo la baarayo xogta laga helay degmooyinka dalka oo dhan, daraasadu waxay soo jeedinaysaa in dhaxalka addoonsigu uu sii wado saameynta xaaladaha dhaqaale iyo bulsho ee meelahan. Xaaladahani, dhankooda, waxay door weyn ka ciyaaraan caafimaadka iyo fayo-qabka dadka deegaanka.
Khubarada ayaa aaminsan in natiijooyinkan ay muhiim u yihiin fahamka dhimista farqiga caafimaad ee hadda jira. Degmooyin badan oo la darsay, nidaamyadii la aasaasay qarniyo ka hor ayaa laga yaabaa inay gacan ka geysteen helitaanka sinnaan la'aanta ee daryeel caafimaad oo tayo leh, waxbarasho, iyo guryo deggan. Kala duwanaanshahan ayaa inta badan sii jira jiilal badan, iyagoo saameynaya rajada nolosha ee dadka madowga ah ee ku nool gobolladaas gaarka ah.
Saraakiisha caafimaadka dadweynaha iyo kuwa siyaasadda dejiyo ayaa hadda eegaya xogtan si ay si wanaagsan wax uga qabtaan caqabadahan. Daraasadu waxay xoogga saaraysaa in horumarinta natiijooyinka caafimaad ay u baahan tahay faham qoto dheer oo ku saabsan sida arrimaha taariikhiga ah ay u qaabeeyaan deegaannada hadda jira. Iyagoo aqoonsanaya qaababkan, hoggaamiyeyaashu waxay rajeynayaan inay abuuraan xeelado wax ku ool ah si loo yareeyo sinnaan la'aanta caafimaadka ee guud ahaan dalka Mareykanka.
Sources: University of California, Berkeley
More United States news
- SMX Highlights American Innovation in the Race to Advance Artificial Intelligence
- Experts Warn of Growing Security Threats from Iran-Aligned Groups After Regional War
- Fong Introduces New Bill to Strengthen the STEM Workforce Pipeline
- U.S. Ambassador to Namibia Joins Trade and Diplomacy Talks Across Three Continents
- What US Manufacturing Could Learn from China's Industrial Policy
- FBI Seizes More Than $1.2 Billion in Cryptocurrency Stolen from Binance
- Roselyn Sánchez Reflects on Hosting the Latin GRAMMYs for the 10th Time
- Darth Vader's Lightsaber from Famous Duel Sells for Nearly $5 Million