World War I

3. The telegram that was sent by Germany to Mexico to attack the U.S.
6. Germans initiated this with their U-boats
8. The area between the trenches
9. When a country uses all of its resources for the war
10. Pulls Russia out of the war by signing the Brest-Litovsk with Germany
13. German plan: Take France down first, then Russia
14. Ship that was sunk by the Germans, one of the reasons why U.S. entered WW1
15. This man assassinated the archduke, which triggered the war

1. Russian revolution under the leadership of Lenin
2. This man was killed, along with his wife, just because they turn a wrong turn
4. The Triple Entente alliance was made of these three countries (in alphabetical order)
5. The spreading of ideas to promote a cause to destroy the enemy
7. Female,Red Cross nurse,shot by Germans because they thought she was a spy
11. One of the most deadliest, new weapons of WW1. Shot bullets rapidly.
12. Germany, Italy, Austria-Hungary