Early modern humans lived toward the end of the Paleolithic Period. These people moved around in small groups and moved from place to place to find food, these people were called . Historians
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on april 6, 1917, the u.s. joined its allies--britain, france, and russia--to fight in world war i. under the command of major general john j. pershing, more than 2 million u.s. soldiers fought on battlefields in france.