Walla Zaman Ya Selahy Walla Zaman Ya Selahy "Walla Zaman Ya Selahy" () was the national anthem of the United Arab Republic (UAR), a federation of Egypt and Syria, from 1960. Though the UAR broke up in 1961, Egypt retained the official name of the union until 1971, and the official anthem until 1979. Prior to being adopted as the UAR anthem, it was a nationalist song performed by Umm Kulthum during the Suez Crisis in 1956, known in Egypt and the Arab world as the Tripartite Aggression, when Egypt was invaded by the United Kingdom, France, and Israel. Due to its strongly nationalist
Frustration–aggression hypothesis hockey game), but might not behave aggressively when they are by themselves (e.g. watching the game alone at home). When individuals are in a crowd, they are more likely to become desensitised of their own actions and less likely to take responsibility. This phenomenon is known as deindividuation. Frustration–aggression hypothesis Frustration–aggression hypothesis, otherwise known as the frustration–aggression–displacement theory, is a theory of aggression proposed by John Dollard, Neal Miller, Leonard Doob, Orval Mowrer, and Robert Sears in 1939, and further developed by Neal Miller in 1941 and Leonard Berkowitz in 1969. The theory says that aggression is the result of