(A) Germany
(B) Austria Hungary
(C) Ottoman Empire
(D) ** Russia
EXPLANATIONS BELOW
Concept note-1: -The Central Powers were Germany, Austria-Hungary, and Turkey, while the Allies including France, Britain and its domain, Russia, Italy, Japan, and from 1917, the United States of America.
Concept note-2: -The Central Powers was the name given to Germany, Austria-Hungary, and their supporters, during World War I. They were fighting against the allied (united) countries of Britain, France, and Russia.
Concept note-3: -Central Powers, World War I coalition that consisted primarily of the German Empire and Austria-Hungary, the “central” European states that were at war from August 1914 against France and Britain on the Western Front and against Russia on the Eastern Front.
Concept note-4: -The Allies described the wartime military alliance of Germany, Austria-Hungary, Bulgaria and the Ottoman Empire as the ‘Central Powers’.
Concept note-5: -The Central Powers began as an alliance between Germany and Austria-Hungary. Later the Ottoman Empire and Bulgaria became part of the Central Powers. Germany-Germany had the largest army and was the primary leader of the Central Powers.