Question: When did italy enter the first world war?
Disambiguated questions and answers: question: When did italy enter the first world war by signing the Treaty of London?
When did italy enter the first world war by declaring war against Austria-Hungary?
answer: 26 April 1915
23 May 1915
question: When did italy enter the first world war by signing the Treaty of London?
When did italy enter the first world war by declaring war on Austria-Hungary?
answer: 26 April 1915
23 May
23 May 1915
Natural Questions answer: 1915 (from the Wikipedia article "Military history of Italy during World War I")