Economic history of the United Kingdom once the territories gained independence and were free to negotiate their own trade agreements. Although the '50s were overall a time of great prosperity for Britain, the Suez Crisis of November 1956 precipitated a financial crisis and a run on Sterling which underlined how fragile post-war British finances were. The tripartite invasion of the Suez Canal Zone by Britain, France and Israel following Egypt's nationalization of the canal (before then majority owned by the British government) was a disaster for British prestige and the economy. The United States and the United Nations came out firmly against the occupation, which caused
Frustration–aggression hypothesis unjustified condition participants. The authors concluded that unjustified frustration leads to greater level of aggression, compared to justified frustration, which, in turn, results in higher levels of aggression compared to the non-frustration situations. In 1964, Leonard Berkowitz stated that it is necessary to have an aggression stimulus to make aggression take place. Then in 1974 and 1993, he remodified the frustration/aggression hypothesis into a theory that removed the importance of aggressive cues to the aggressive behavior. Which is to say, extremely angry subject will show aggression even if the aggression cue is absent. The most provocative theory introduced by Berkowitz