The Nazis were able to experiment with their new weapons; it produced open conflict between fascist and anti-fascist forces; it probably increased fears of spreading fascism.
The Soviet Union did this because they wanted to rebuild and expand their country after massive destruction and loss of life during the war. Essentially this aggressive expansion and annexing of these countries made the world realize that the Soviets were a massive threat to the world even though they were allies during WWII. I hope this helps :)
When Vicksburg fell to Union troops on July 4, 1863, the Confederacy lost its last chance to control the Mississippi River. Control of the Mississippi River during the American Civil War was an economic and psychological factor for both the North and the South.
<span>The Army of the Potomac, under the command of George McClellan, mounted a series of powerful assaults against Robert E. Lee’s forces near Sharpsburg, Maryland, on September 17, 1862. The morning assault and vicious Confederate counterattacks swept back and forth through Miller’s Cornfield and the West Woods. Later, towards the center of the battlefield, Union assaults against the Sunken Road pierced the Confederate center after a terrible struggle. Late in the day, the third and final major assault by the Union army pushed over a bullet-strewn stone bridge at Antietam Creek. Just as the Federal forces began to collapse the Confederate right, the timely arrival of A.P. Hill’s division from Harpers Ferry helped to drive the Army of the Potomac back once more. The bloodiest single day in American military history ended in a draw, but the Confederate retreat gave Abraham Lincoln the “victory” he desired before issuing the Emancipation Proclamation.</span>