This about the past such as when dinosaurs roamed.
Triassic and Jurrasic are two of those periods
The Vietnam War usually has a negative legacy in the eyes of American citizens. This war caused the lives of thousands of US soldiers and involved hundreds of millions of dollars spent by the federal government. Many citizens did not agree with/understand why we were putting so many resources into a country that was thousands of miles away. This resulted in hundreds of protests across the US.
Along with the "waste" of resource/soldiers, citizens also disliked the way in which the US government used tactics that resulted in the deaths of innocent civilians. The use of Agent Orange was a perfect example, as this herbicide had detrimental health effects on thousands of innocent Vietnamese citizens.
I presume your question is in reference to The Great War, which we now call World War I.
The days leading up to the Great War (World War I) were full of military buildup, military planning, and countries lining up with one another in alliance systems. The Triple Entente had Britain, France and Russia as allies. In between those countries were the members of the Triple Alliance: Germany, Austria-Hungary, and Italy, with Germany as the leading power in that group.
Because of the alliance system, Germany assumed that if a war began, it would need to fight on two fronts -- west and east. Germany assumed it would be fighting against both France (on its western border) and Russia (on its eastern border) if war broke out.
German Field Marshall Alfred von Schlieffen drew up war plans that said attack France first, quickly, and then hold that territory while deploying forces to contend with Russia in the east.
In 1914, when Russia mobilized troops to come to the aid of Serbia against Austria-Hungary in 1914 (after the assassination of Austria's archduke by Serbian radicals), Germany declared war on Russia. And when Germany went to war, the first thing it did was to march through Belgium to go and attack France. Up to that point France had not had involvement in the conflicts that had begun in the Balkans. Thus the war spread and quickly became a more global conflict.
Yes he was. When Roosevelt met with Churchill in the middle of the Atlantic, he was showing his support for Britain and subsequently freedom in general. He made no formal declaration of hostilities.