Answer: Balkans were called the "powder keg" of Europe because of the tensions and conflicts in the political situation going on. The Balkans consisted of numerous ethnic people, different religious groups, several cultural backgrounds.
Explanation:
The Balkans were preceded by World War 1 and in the early 20th century. Men from several countries joined the Balkan League because some were still under Ottoman rule even though independence had been achieved. It only took 4 states to defeat the Ottomans during the first war. However, Bulgaria was defeated in the 2nd war. When the "powder keg" finally exploded after fighting back and forth, this was when the first World War was started.
