Assuming this was the same post made before, this poster is pushing Americans to avenge the bombing of Pearl Harbor by the Japanese by committing to the war effort.
<span>.<span>The ban ended iconoclasm in the Byzantine Empire and allowed the art of Christian figures to flourish apex</span></span>
Hitler´s rise to power started after the end of World War I. He joined a political party which´s name he changed as soon as 1920 to "Nationalsozialistiche Deutsche Arbeiterpartei" , meaning National Socialist German Worker´s Party, which we usually know simply as Nazi Party. Anti-Marxist and opposed to the Treaty of Versailles and the Weimar Republic soon started with a srong anti-semitism. The culmination of his rise to power was the "Enabling Act" that permitted him to exercise great power without control.
The answer is true to your question
It was a chain reaction. Long story short, the countries were pulled into the war because of agreements they had with their allies. This treaty is what caused the countries to enter WWI, to protect and defend their allied countries who were already in the war.
