Hassan II of Morocco because of Moroccan claims on the country (see Great Morocco). Economically, Hassan II adopted a market-based economy, where agriculture, tourism, and phosphates mining industries played a major role. The period from the 1960s to the late 1980s was labelled as the "years of lead" and saw thousands of dissidents jailed, killed, exiled or forcibly disappeared. King Hassan II had extended many parliamentary functions by the early 1990s and released hundreds of political prisoners in 1991, and allowed the Alternance, where the opposition assumed power, for the first time in the Arab World. He set up a Royal Council for Human
Leo II (emperor) II ascended the throne. On 9 February 474, the Byzantine Senate made his father Zeno co-emperor under Leo II, as Leo II was too young to sign official documents. Leo II died soon after, on 10 November 474, at the age of 7, leaving Zeno as the sole emperor. His death having occurred so soon after he became emperor has led to speculation among some modern scholars that he was poisoned by his mother Ariadne so that Zeno could ascend to the throne. However no contemporary sources raised this suggestion, even though Zeno was unpopular, thus it is considered likely