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the answer you are looking for is d
Because when the natural rubber supply from Southeast Asia was cut off at the beginning of World War II, the United States and its allies faced the loss of a strategic material. <span> So the companies, in collaboration with a network of researchers in government, academic, and industrial laboratories, developed and manufactured in record time enough synthetic rubber to meet the needs of the U.S. and its allies during World War II.</span>
East, because Russia is east of germany
