Answer:
Hitler and his propagandists used a variety of methods to spread propaganda, including speeches, rallies, posters, newspapers, and films. However, it is widely believed that Hitler considered radio to be the most effective method for spreading propaganda. Radio was a relatively new and powerful medium at the time, and the Nazi Party made extensive use of it to broadcast speeches, news reports, and other programming that promoted their ideology and demonized their enemies. Hitler himself was a powerful and charismatic speaker, and his speeches were often broadcast live and repeated throughout the day to ensure maximum exposure. Radio played a significant role in the Nazi's rise to power and their ability to maintain control over the German people during World War II.