Answer:
It may be bandwagon
Step-by-step explanation:
Bandwagon is a persuasive technique and a type of propaganda through which a writer persuades his readers, so that the majority could agree with the argument of the writer. He does this by suggesting that, since the majority agrees, the reader should too.
Ok, so the technique is prolly being used because they want everyone on the same side the war. It won't work for that country to have people in the same country not helping, or disagreeing with what the country is trying to do. So by telling people to join up, or help the war cause, it is getting people to all be on the same side.
None of the other options make sense.
GOOD LUCK!!!!