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
Well I can answer your sacrifice question but not the others XD. but any way sacrifice is considered a honor because say your sacrificing for your mom you love her so much that you would die for her so that is an honor.
honor means you take pride.so even if you die for anyone that is a honor. I hope I explained it right.
A.through a careful study of each piece of evidence