<span>It is true that the Japanese created one of the most technologically advanced and best governed civilizations of Earth. Although they are very isolated from the rest of the world, they are still more advanced than most of the western world. They could compete with America and China when it comes to technology and improvement to the world, and they are also a great nation when it comes to proper behavior. </span>
Roosevelt sent supplies, military equipment, and surplus to help aid the Allies (usually they wouldn't do this until they were part of the war). In doing this, it shows that the US doesn't wait until they get hit, instead they reach out (even though it was only economically, in the case of military, they still waited). Roosevelt also wasn't really the reason the US ended isolationism. It was more of Emperor Hirohito. He allowed his military generals to attack Hawaii for resources and to continue on their expansions of taking over all of the Pacific. Roosevelt only "convinced" (well, all of them were hopping mad already) Congress to declare war on Japan and Germany.
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The main event that ended the Russian monarchy was the February Revolution. It was a spontaneous demonstration against the Tsar's government which turned riotous and spread to many other cities. The Tsar tried to order police and military forces to put down the riots, but they refused to obey him. In fact, many soldiers even joined in the riots.
Tsar Nicholas realized that the only way to end the violence was to abdicate his throne. He signed the abdication papers in March 1917 ending 300 years of the Romanov monarchy. The Provisional Government was instituted to govern the country until a Constituent Assembly could be seated, but the Provisional Government was overthrown in the October Revolution also known as the Bolshevik Revolution. The Bolshevik Revolution is not the revolution which ended the Russian monarchy, because the monarchy had already ended 8 months earlier.
<span>In addition, the Tsar and his family were not killed during the Russian Revolution. They were kiled by the Bolsheviks during the Russian Civil War in July 1918, nine months after the October Revolution had ended.</span>
The Vietnam War was a highly contentious period of time for the US, as it divided the nation in two and raised a counter culture that fought against government intervention. Many believed that the United States had no business in this conflict.