The predominance of the English language, the existence of a democratic system of government drawing upon the British traditions of the Westminster system of government, Parliamentarianism and constitutional monarchy, American constitutionalist and federalist traditions, Christianity as the dominant religion, and the popularity of sports originating in (or influenced by) the British Isles, are all evidence of a significant Anglo-Celtic heritage. Australian culture has diverged significantly since British settlement. Sporting teams representing the whole of Australia have been in existence since the 1870s.