1. Announcement of Archduke Ferdinand’s visit to Sarajevo

2. Gavrilo Princip Assassinated Archduke Ferdinand in Sarajevo June 28 th , 1914

3. Austrian Emperor Blamed Serbia

4. Harsh Ultimatum -Serbia ends all anti-Austrian agitation and punishes officials involved in the murder plot

5. Serbia did not agree to all the terms

6. Austria asked for and got Germany’s help

7. Austria declared war on Serbia: July 28 th , 1914

8. Serbia asked for and got help from Russia

9. Russia Mobilized Troops so Germany declared war on Russia

10. Russia asked for and got France’s support

11. Germany told France to mind their own business, but they refused

12. Germany declared war on France

13. Germans attacked France via Belgium

14. British declared war on Germany