What period are you talking about?
Answer/Explanation:
Under the Lend-Lease Act, the United States sent enormous quantities of war materiel to the Soviet Union, which was critical in helping the Soviets withstand the Nazi onslaught. By the end of 1942, the Nazi advance into the Soviet Union had stalled; it was finally reversed at the epic battle of Stalingrad in 1943.
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Answer: Trade became the vehicle for the spread of religious ideas, technological innovations, disease-bearing germs, and plants and animals to regions far from their places of origin.
