World War I

2. A union or association formed for mutual benefit, especially between countries and nations
4. The heir to throne of Austria Hungary; His assassination in 1914 triggered the start of World War I
9. Tsar of Russia; abdicated in March, 1917
10. Tsarina of Russia; abdicated in March, 1917
12. The treaty imposed on Germany to end the war between them and the Allied Powers.
13. The military alliance among the German Empire, the Austro-Hungarian Empire, the Ottoman Empire, and the Kingdom of Bulgaria (The Central Powers)
14. The military alliance formed between the countries France, Great Britain and Russia (The Allies)

1. Opposing troops forces attack from trenches
3. When the Provisional Government was overthrown and left the Bolsheviks in power
5. An agreement made by opposing sides in war to stop fighting for a period of time
6. Russian founder of the Bolsheviks and leader of the Russian Revolution and first head of the USSR
7. The organization to promote international cooperation and world peace that was made by the Treaty of Versailles
8. The compensation given or received due to insult or injury
11. Not taking a side during a controversy or war between opposing nations