Germany. Austria-Hungary. Ottoman Turkey. Bulgaria
Because they liked them....... :)
Germany, the Ottoman Empire, and Bulgaria (1915-1918) was on Austria-Hungary's side.
Germany was Austria-Hungary's Biggest allie
Central Powers: Germany, Ottoman Empire, Bulgaria, Austria-Hungary
Yugoslavia.
Central Powers
The answer is: The Central Powers.
Germany, Austria-Hungary, Turkey, and Bulgaria.
The Central Powers
Because Bulgaria allied with Germany
Bulgaria