Answer:
Explanation:
In Europe, American combat troops would encounter new weapons systems, including sophisticated machine guns and the newly invented tank, both used widely during World War I. American forces had to learn to fight with these new technologies, even as they brought millions of men to bolster the decimated British and French armies.
<span>Background of US conflict with Soviet. During World War II, Roosevelt followed a policy of "the Grand Alliance" with the determination to get along with the Soviet Union. He was determined to follow this policy after the war and believed the United Nations, one of his pet projects, would maintain the postwar peace.</span>
A primary source would be an eye witness account of the event. Someone who seen it happen.