It was established in option b.1911
Labor Union is an organized association of workers, often in a trade or profession, formed to protect and further their rights and interests.
Roosevelt and most Americans considered the Pearl Harbor attack to be a dirty trick, because it occurred while the Japanese ambassador was talking with the US about keeping peace in-between the two nations.
~
To gain backing of Americans, both the Allies and Central
Powers used Propaganda intended to influence opinion. Governments
during the First World War keen massive capitals and huge quantities of effort
to creating material intended to shape opinion and action worldwide. The labors
of states to defend their actions, and to build global support, caused in some
of the most influential propaganda ever shaped.
