The excerpt that helps infere the evidence of awareness and importance of zimmerman's message is the one that states the type of action Zimmerman performed. When the excerpt says that he clearly wanted the mexican government to help germany in the war, he sent the telegram . This information is clear enough to see the importance of the message. remember the content is very straight and is not just a group of details without importance
Con means together, junction means to join, and tion means doing something.
So it means "the act of joining something together"