The Caucasus region gradually enters the historical record during the Late Bronze Age to Early Iron Age. Hayasa-Azzi was a Late Bronze Age confederation of two kingdoms of Armenian Highlands, Hayasa located South of Trabzon and Azzi, located north of the Euphrates and to the south of Hayasa. The Hayasa-Azzi confederation was in conflict with the Hittite Empire in the 14th century BC, leading up to the collapse of Hatti around 1190 BC