WHO declared World War 1?

Related questions

1. How did World war1 end?
2. How many people were killed by guns in ww1?
3. When did ww1 start and why?
4. Why did Serbia kill the Archduke?
5. Why did Gavrilo Princip assassinate Franz Ferdinand?
6. Was Gavrilo Princip a member of the Black Hand?
7. Why are medals worn on the left side?
8. Why did Germany get blamed for ww1?
9. Why did they kill Archduke?
10. Why was Archduke Ferdinand assassinated?

Tags

1. #world
2. #sarajevo
3. #beginning
4. #first
5. #nationalist
6. #declares
7. #ferdinand
8. #month
9. #hungary
10. #after
11. #serbia
12. #serbian
13. #austria
14. #killed
15. #franz
16. #archduke
17. #effectively