Nazi Germany and the Soviet Union had a non aggression pact. When Germany's attempt to conquer England failed Hitler turned his attention to the Soviet Union. When Germany broke the treaty with the Soviet Union the Soviet Union asked to join the Allies in the fight against the Axis Powers.
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Answer:
One major source of disagreement between Booker T. Washington and W.E.B Dubois was whether or not to use force as a means of racial integration. Washington believed that people of African race should learn to fit in with the whites (by exceding in work), whereas Dubois believed that riots and sit-ins were necessary to diminish racial inequality. 
Explanation:
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The Pacific Railroad Act stipulated that the Central Pacific Railroad Company would start building in Sacramento and continue east across the Sierra Nevada, while a second company, the Union Pacific Railroad, would build westward from the Missouri River, near the Iowa-Nebraska border.
        
                    
             
        
        
        
A person who believed in 'popular sovereignty' would believe that each territory should decide whether it becomes a free or slaveholder state.
        
                    
             
        
        
        
Your answer is the letter c