Влизането на България в Първата световна война: причини и предпоставки
At the beginning of World War I Bulgaria remained neutral, waiting for favourable conditions to engage in the conflict. Its supreme political objective was national unification. The Balkan countries were under constant pressure of the warring coalitions that were trying to win new allies. No Balkan state was a master of the situation and each was afraid about it's back. Because of its geographic location Bulgaria had a strategic position in the Balkans and its joining one of the warring groups would have ensured its geopolitical advantage in the war. In the "Bulgarian summer of 1915" both warring coalitions tried to attract the country on their side, offering territorial compensations or awards. Germany's promises were taken as more reliable by the politicians and Bulgaria entered World War I as part of the Central Powers. The choice of the great allies proved wrong. What was more, the manner of selection was also wrong - not according to the possibility of final victory, but according to the bidding in the territorial auction the profit of which would be lost at the loss of the war.
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