Which one of these countries was NOT in the Central Powers during WWI?

The story behind the answer

Spain is correct because it remained neutral throughout World War I, while Germany, Austria-Hungary, and the Ottoman Empire (“Turkey”) formed the core of the Central Powers. Spain did not join either side, partly due to internal political divisions and a desire to protect its fragile economy and overseas interests.

Context tip: Remember the Central Powers as a bloc stretching through Central/Eastern Europe into the Middle East—Germany, Austria-Hungary, Ottoman Empire (and Bulgaria). Western European Spain sits outside that “central” arc, making its neutrality easier to recall. Spain’s neutrality allowed it to profit from trade and play a humanitarian role—King Alfonso XIII’s office helped locate prisoners of war—while Italy, originally in the Triple Alliance, actually switched sides to the Allies in 1915.