In the Bronze Age, several states flourished in the area of Greater Armenia, including the Hittite Empire (at the height of its power in the 14th century BCE), (Mitanni (South-Western historical Armenia, 1500-1300 BCE), and Hayasa-Azzi (1500–1200 BCE). Soon after Hayasa-Azzi came Arme-Shupria (1300s–1190 BCE), the Nairi Confederation (1200–900 BCE), and the Kingdom of Urartu (860–590 BCE), who successively established their sovereignty over the Armenian Highland. Each of the aforementioned nations and tribes participated in the ethnogenesis of the Armenian people. Under Ashurbanipal (669–627 BCE), the Assyrian empire reached the Caucasus Mountains (modern Armenia, Georgia and Azerbaijan).