How Ireland became Ireland

Kind of the last bit to tack onto the previous post.

Ireland became Éire (or in English, Ireland) in the 1930's, when Fianna Fáil (who had opposed the treaty, also known as the Soldiers of Destiny) came into power. It is known as the Republican Party and is currently in power as well.

Ireland remained neutral during WWII, though it assisted the Allies minimally.

It declared itself a republic in 1949.

Source