 Only the kings of countries who were not subject to any other king and powerful enough to draw the respect from their adversaries were allowed to use the title of "great king".Those were the kings of Egypt, Yamhad, Hatti, Babylonia, Mitanni (until its demise in the 14th century), Assyria (only after the demise of Mitanni), and for a brief time Myceneans.Great kings referred to each other as brothers and often established close relationships by means of marriages and frequent gift exchanges.