The main reason for british colonization of Singapore was to obtain use of its harbor and ports. Singapore was in a very strategic position for certain trade and shipping routes.
The United States entered<span> the war because of the Germans' decision to resume the policy of unrestricted submarine warfare, and the so-called "Zimmerman telegram," intercepted by the British, in which Germany floated the idea of an alliance with Mexico.
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Why Did The US Enter WW1 - eNotes.com<span>https://www.enotes.com/homework-help/why-did-united-states-enter-world-war-400883</span>
During World War II, Marshall was instrumental in preparing the U.S. Army and Army Air Forces for the invasion of the European continent. Marshall wrote the document that would become the central strategy for all Allied operations in Europe.