Every September 6th, Bulgaria celebrates one of the most audacious political maneuvers in Balkan history - a bloodless coup that transformed the geopolitical landscape of southeastern Europe and sent shockwaves through the great powers of the 19th century. Unification Day commemorates the moment when a small nation dared to defy the Berlin Congress and redraw its own borders through sheer political cunning. The Divided Nation To understand the magnitude of Bulgaria 's unification , we must