Two countries in world war 1
- Two main countries in world war 1
- Two groups of countries in world war 1
- Two countries that fought in world war 1
- Which two countries were involved in world war 1
- What two countries were fighting in world war 1
- The first two countries involved in world war 1
- Name two countries which supported austria in world war 1
- Which two countries joined world war i in 1915
- Which two countries entered world war ii in 1941
- Which two countries joined world war 1 in 1915
- Which two countries were the first to declare war in world war 1