What event was the spark that ignited world war 1
- What event is considered the spark that ignited world war 1
- What major event acted as the spark that ignited world war 1
- What event is often cited as the direct spark that ignited world war 1
- What event caused the spark that ignited the main reasons of world war 1
- What is the single event which is considered the spark that ignited world war 1
- On june 28 1914 what was the event or spark that ignited world war i
- What was the spark that ignited world war 1