What were the main problems of world war 1?

Is Korea going to nuke America? Who was Robert Pershing Wallow? Why did the government create the office of war mobilization'? What is value georgius IIII dg medal 1823 with george and ths dragon on back? Where is Sadako Sasaki buried? What was the main advantage of nuclear missiles? What country was the film soldiers of the cross was made in? How long was George B McClellan an Army General? What did the people eat in the Warsaw Ghetto? Why did the war start with the Sherman's March to the Sea? How did armies defend in world war 1? Does attending a military college count as military service? I understand that it is written somewhere that the life expectany of a soldier in Vietnam was some seconds or minutes. Do you have the answer? How many people were killed from Australia in World War 1 and 2? What Weapons used in the battle of passchendaele? When the squad leader deems it necessary to align the squad he must command the squad to the appropriate interval before giving the command for the desired alignment What are the commands to align it? How did the Battle of Stalingrad contribute to the allied victory in world war 2? Which was not a meeting place for allied leaders? What event during the ww1 triggered the red scare? How did World war 1 and it's outcomes affect East Asia?