Because it is different then all the other continents are defined
Answer:
Yes the answer is B which is Austria-Hungary and Germany
Explanation:
Germany declared war on Russia because Russia threatened to attack Austria-Hungary if they invade Serbia.
Allied Powers: France, UK, Russia, Serbia, Montenegro, Belgium USA, Japan, and soon Italy (since Italy used to be apart of the Central Powers but later switched sides)
Central Powers; Germany, Austria-Hungary, Ottoman Empire, Albania, and Bulgaria
Ausdria-hungry addempted do addack the da serbia, and den de Archduke Franz of de Ausdria was killed on a fluke, which afderwards de entangling alliances caused Russia and Germany to ender the fray bud den gommunism took Russia and dey dipped out, bud Germany was invading belgium and mosd of de beople were againsd dat and foughd germany, Austria-Hungary and of gourse de Ottoman Empire, and dat is world war one :DDDD