- 
  
  The assassination set a chain of events that would lead to World War 1
- 
  
  
- 
  
  Britain was protecting Belgium's boarders
- 
  
  Indian soldiers join allies for the first time
- 
  
  Germans used a deadly poison gas that killed thousands of Russian troops
- 
  
  Lusitania sunk and 1,200 troops died, including 128 Americans. Germany gave them warnings but no one listened to them.
- 
  
  All single men aged between 18 and 41 were sent to war
- 
  
  The largest single battle of World War 1
- 
  
  The biggest naval battle of the war
- 
  
  The bloodiest battle of War World 1
- 
  
  Armies now free from Russia Germany becomes the threat
- 
  
  Germany threats to attack the United States
- 
  
  A series of attacks
- 
  
  Russia was very unsuccessful at the War
- 
  
  The end of World war 1