B. the period when many Western Europeans traveled across the Atlantic and Pacific oceans for the first time.<span>
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I'm not sure about question number 1 but number 2: It was dubbed "The Cold War" because neither United States or the Soviet Union declared war. Hope this helps :}
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C. The main reasons imperialism was happening was for resources in order to be more industrialized. It always comes back to having more raw materials and natural resources.
