Answer:it is either D or C. when Germany told Austria Hungary to fight of the russians, Austria hungary lost. In Austria Hungary many people wanted separation From Hungary or Austria.
Explanation:
During World War, I Austria-Hungary struggled a lot because the numerous nations within the empire are contending for their independence. Thus, option D is correct.
World War I lasted from July 28, 1914, until November 11, 1918. Franz Ferdinand, the heir to the Austro-Hungarian Empire, was killed by the Serbian patriot Gavrilo in 1914 led to the start of the war.
Austria and Hungary took part in the war, but they have to face back lag as the people of their nations have their own problems as both the countries have many people of different nationalities, and they all wanted to be free and that led to various disturbance in their nations.
The empire of hungry and Austria has many nations fighting for independence. Therefore, option D is the correct option.
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