I think you should go to historical sources.
QUOTE: In 1858, Ferdinand de Lesseps formed the Suez Canal Company for the express purpose of building the canal. Construction of the canal lasted from 1859 to 1869. The canal officially opened on 17 November 1869. ... The canal was the property of the Egyptian government, but European shareholders, mostly British and French, owned the concessionary company which operated it until July 1956, when President Gamal Abdel Nasser nationalised it—an event which led to the Suez Crisis of October–November 1956.[5] The canal is operated and maintained by the state-owned Suez Canal Authority[6] .... The Convention of Constantinople in 1888 declared the canal a neutral zone under the protection of the British, who had occupied Egypt and Sudan at the request of Khedive Tewfiq to suppress the Urabi Revolt against his rule. The revolt went on from 1879 to 1882. The British defended the strategically important passage against a major Ottoman attack in 1915, during the First World War.[86] Under the Anglo-Egyptian Treaty of 1936, the UK retained control over the canal. With outbreak of World War II the canal was again strategically important; Italo-German attempts to capture it were repulsed during the North Africa Campaign, which ensured the canal remained closed to Axis shipping.
