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>
The answer is B, they conquered
Not so sure about the shape . i do know however its a cold and a warm front spinning around and around maybe that might answer depending on the question