Educate yourself.
en.wikipedia.org
On 26 July 1956, Nasser nationalised the Suez Canal Company, which prior to that was owned primarily by British and French shareholders. On 29 October, Israel invaded the
Gaza Strip and the Egyptian
Sinai. Britain and France issued a joint ultimatum to cease fire, which was ignored. On 5 November, Britain and France landed
paratroopers along the Suez Canal. The Egyptian forces, before they were defeated, blocked all ship traffic by sinking 40 ships in the canal.
It later became clear that Israel, France and Britain had conspired to plan the invasion. The three allies had attained a number of their military objectives, but the canal was useless. Heavy political pressure from the United States and the USSR led to a withdrawal. U.S. president
Dwight D. Eisenhower had strongly warned Britain not to invade; he threatened serious damage to the British financial system by selling the U.S. government's
pound sterling bonds. Historians conclude the crisis "signified the end of Great Britain's role as one of the world's major powers".
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