The correct answer to this open question is the following.
Although there are no options attached we can say the following.
The world event Bruno Heilig is referring to in the first sentence is the terrible economic conditions in Germany after the failure of the Weimer Republic that tried to instill a different economic model but it did not work. Germany lived in poverty and hunger.
These harsh economic conditions in Germany facilitated the arrival to the power of Nazi leader Adolph Hitler in 1933.
Bruno Heilig was an Austrian journalist that in 1938 wrote an article titled "Why the German Republic Failed," describing the reasons that made teh Weimar Republic fail and the coming of Hitler to be the leader of a Germany that was so much in despair and needed a strong leader such as Hitler.
Bruno Heilig was a renowned journalist that had worked as an international correspondent in the Balkans, Germany, and Hungary.