Answer: are motivated to pay attention; central
The elaboration likelihood model was developed by Richard Petty and John Cacioppo in 1980. The process describes how thought can arise in two different ways, or as a result of two different processes through the change of attitudes.
The elaboration likelihood model of persuasion describes the central route and the peripheral route as the two routes to persuasion.
The model explains that people who are thoughtful and considerate will take the central route of persuasion.
While persuasion will occur with positive or negative relation.
At the beginning of the great war, many people were actually enthusiastic about the war (and at least supported it), which was fuelled by nationalism ( and the desire to prove themselves better than other nations) and perhaps hopes for territory gain; at the time it was not known that the Great War would come with such a great loss of life.
Mexico has a supreme power within its territory