Answer:
New technologies and propaganda drastically changed how governments waged war during World War I by allowing communication with allies to be accomplished a lot easier, as well as allowing governments to garner support from the general populace much quicker than ever before. Propaganda has been around for a while, but it became increasingly popular around the WWI era. Propaganda changed how governments waged war because propaganda allowed the government to change the minds of the people with ease, as propaganda often exaggerated things, and made it so that it seemed like without the support of the people, life as they knew it would end. These ideas, even if they were false, were portrayed in a way meant to convince people to support the government. Technology also contributed to the spread of propaganda, as new technologies allowed government bodies to distribute propaganda, which increased public support a lot faster than previously thought possible. Also, countries could communicate with their allies with relative ease, using technology such as the telegraph, radios, telephones, etcetera. All of these factors combined changed how governments waged war by making it a lot easier to do so, as with most of the people supporting the war, it would be almost guaranteed for there to not be a revolution as a result of heavy backlash. Also, countries would not be as hesitant to go to war, since they had a lot better communication with their allies and their own armies, which made it so that countries would know how much of a risk they were taking by entering the war and sending out troops.
Step-by-step explanation: