Mackay's account of inexplicable mania was unchallenged, and mostly unexamined, until the 1980s. Ottoman suzerainty remained virtually unchallenged throughout the following 90 years. This view was largely unchallenged until the late 1980s. This brought about unipolarity with the U.S. unchallenged as the world's dominant superpower. That opinion went largely unchallenged for 50 years. The Jesuits went largely unchallenged by rival denominational missions in Africa. Torah remains the unchallenged and preeminent center. But his theories would be unproven and therefore unchallenged for another 20 years. This achievement remains unchallenged to this day. The meteoric take over went almost unchallenged. He was unchallenged in the Democratic primary. Smallwood ran Newfoundland virtually unchallenged for 23 years. It reported a number of organisational failures which had allowed him to continue unchallenged. The combined empires were simply too big to go unchallenged by European rivals. Sewell was again unchallenged by a Republican in the 2016 general election.