Which country world war 1
- What country started world war 1
- Which country won world war 1
- Which country fought world war 1
- Which country between world war 1
- Which country fight world war 1
- Which country involved in world war 1
- Which country participated in world war 1
- Which country start world war 1
- Which country caused world war 1
- Which country lost world war 1
- Which country declared world war 1
- Which country ended world war 1
- Which country won world war 1 and 2
- Which country did world war 1 start in
- Which country started world war 1 and 2