Genetic studies explain Armenian diversity by several mixtures of Eurasian populations that occurred between 3000 and 2000 BCE. But genetic signals of population mixture cease after 1200 BCE when Bronze Age civilizations in the Eastern Mediterranean world suddenly and violently collapsed. Armenians have since remained isolated and genetic structure within the population developed ~500 years ago when Armenia was divided between the Ottomans and the Safavid Empire in Iran. A genetic study (Wang et al. 2018) supports the indigenous origin for Armenians in a region south of the Caucasus which he calls "Greater Caucasus".