difference is that cushitic branch is a good few thousand years older than slavic languages. 1500ybp af maay and maxaa hadnt split yet. 3000ypb is when oromo split with somali. east cushitic unity is around 4000ypb.Somali, Anfaar and Saho as well as Eastern Oromo like Aris and Boran are the same or
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Eastern Slavic people like Russian, Ukrainian, Ruthenian and Belarussians, very similar in languages, culture and are from the same stock if you go back easily 1000 year ago
i would not be surprised if 1500 years we were the same who lived together
people lie here when they say canfaar is assimilated, not true, is Saho assimilated too? yet speak to a Saho, virtually almost like somali in language, culture etc but are from eriteria
they are Slavic or Germanic races very closely related