The treaty forced unfair rules and demands on the German people and they were looking for anyone to step up and fix the mess. So Adolf Hitler was popular because he promised to fix Germany's loss
The answer is c the growth and changing technology
The assassination of Franz Ferdinand<span> by a Serbian Gavrilo Princip is the event that started World War 1. Ferdinand's wife Sophie was also killed in the attack.</span>
Appeasement the giving into Hitler by the USA and UK
This creates friction. Since the two materials are running against each other.