I think the correct answer among the choices listed above is the second option. An opponent of Great Britain during the war was Italy. This is because Italy was allied with Germany and Japan (in a group known as the Axis) against the US Britain and France. Hope this answers the question.
The workers wanted better working conditions and better living conditions
I would argue that the primary difference was the introduction of nuclear weapons after WWII--meaning that the spread of communism could actually take over the world as opposed to just causing unrest in the US.
The first two links provide a good summary of how the coal strike of 1902 was settled by President Roosevelt acting a patient mediator. The strike began on May 12, 1902 and ended October 23, 1902.
