Why do countries need propaganda to “sell” the war?

Sterling: Propaganda could be used to arouse hatred of the foe, warn of the consequences of defeat, and idealize one's own war aims in order to mobilize a nation, maintain its morale, and make it fight to the end.

Explanation: H I ;0

this means that germany had to pay the allied countries. reparations are/is essentially payment for something that they have done wrong, so after ww1, germany was forced to pay reparations so they could replenish the allied countries resources' that they had lost during the war.