Balkan Union may refer to:
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Balkan Federation
In late 19th and throughout the 20th century, the establishment of a Balkan Federation had been a recurrent suggestion of various political factions in the Balkans. The concept of a Balkan federation emerged in the late 19th century among left-w ...
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Greek–Yugoslav confederation
The Greek–Yugoslav confederation or Greek–Yugoslav federation, or Balkan Union, was a political concept during World War II, sponsored by the United Kingdom and involving the Yugoslav government-in-exile and the Greek government-in-exile. The t ...
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