It was a gradual process, but the German sinking of the Lusitania aroused furious denunciations of German brutality and allowed the US to enter the war.
It is because the US joined WWI the latest and lost the least as compared to the other countries and powers. However the US decided to isolate itself after WWI as they did not want to lose any more. Hence the US did not join the league of nations or participate in anything after the Treaty of Versailles.
united nations if after WWII but if after WWI its the league of nations. but the US didn't join the league of nations because they tried isolationism which is to isolate the country from foreign affairs and that was the league of nations. the US did join the united nations though
The league of nations was created out of WWI.
There were about 26 countries during WWI.
The allianes caused WWI because when one counrty joined the war another counrty would have a problem with that counrty then he would join. Then that's how all counrty's caused the Great War because of It's problems with Each counrty.
Technically, the age of joining was 18 but many went younger.
The League of Nations.
Serbia started WWI when the serbs killed the archduke of austria-hungry
Because Germany invaded France- they were given little choice in the matter.
The League of Nations was formed to try and keep peace at the end of WWI.
France, Italy and russia were sided with Great Britain in WW1
Unless they were drafted like in WWI, they didn't have to join. If you were drafted and didn't go you were probably arrested.