USA HISTORY

Detailed explanation-1: -Answer: Imperial Germany and Austro-Hungary were the original members of the alliance Central Powers which was later joined by Bulgaria in 1914 and the Ottoman Empire in 1915.

Detailed explanation-2: -Triple Alliance, secret agreement between Germany, Austria-Hungary, and Italy formed in May 1882 and renewed periodically until World War I. Germany and Austria-Hungary had been closely allied since 1879.

Detailed explanation-3: -During the conflict, Germany, Austria-Hungary, Bulgaria and the Ottoman Empire (the Central Powers) fought against Great Britain, France, Russia, Italy, Romania, Canada, Japan and the United States (the Allied Powers).

Detailed explanation-4: -Page 1 – Introduction The Allies described the wartime military alliance of Germany, Austria-Hungary, Bulgaria and the Ottoman Empire as the ‘Central Powers’. The name referred to the geographical location of the two original members of the alliance, Germany and Austria-Hungary, in central Europe.