The country that faced a unity crisis due to having a large variety of ethnic groups was D.)Austria-Hungary.
<h3>Which groups were in Austria-Hungary?</h3>
Austria-Hungary was an empire that comprised of several ethnic groups including Serbs, Bosnians, Croats, Hungarians, and Austrians.
These groups wanted independence for themselves and this led to a lot of strife in the empire.
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To be eligible to serve, you must be at least 25 years old, been a U.S citizen for the past seven years, and be an inhabitant of the state they represent (at election time).
Ida B. Tarbell was an essential investigative journalist.
Besides being a journalist, Ida B. Tarbell was an American writer and a lecturer. She lived during the late 19th century and also during the oil boom. Furthermore, <u>she was one of the pioneers of investigative journalism and she mainly spent her life investigating about the oil industry</u> and advocating for world peace. One of her most famous works is <em>The History of the Standard Oil Company,</em> where she confrontates and exposes John Rockefeller's practices.
C is the correct answer
Sorry if It’s wrong
Answer/Explanation: They were able to gain independence
