The Congress of Vienna was convened in 1815 by the four European powers which had defeated Napoleon. The first goal was to establish a new balance of power in Europe which would prevent imperialism within Europe, such as the Napoleonic empire, and maintain the peace between the great powers
In March 1917, the army barracks at Petrograd united striking workers in challenging socialist reforms, and Czar Nicholas II was enforced to step down from his leadership. Nicholas and his family were first detained at the Czarskoye Selo palace, then in the Yekaterinburg palace near Tobolsk. In July 1918, the improvement of anti-revolutionary forces caused the Yekaterinburg Soviet forces to fear that Nicholas might be set free. After a secret meeting, a death sentence was approved on the imperial family, and Nicholas, his wife, his children, and several of their servants were gunned down on the night of July 16.
U.S Constitution and the Decleration of Independence
The two wars are connected because Vietnam War is one of the many proxy wars of the Cold War between the United States and Soviet Union. Both countries fought in the war without directly fighting each other. Instead, the Soviet Union puppet government North Vietnam and the Viet Cong fought against south South Vietnam, and American troops fought to avoid North Vietnam taking over the region.