World War 1

1. The ___________ Line was a 45 mile long defensive zone that stretched back 4 miles.
6. This country made the first tank.
9. The assassination of ________________ ignited the first World War.
11. On April 6, ________ the United States of America joined World War 1.
12. In 1918, Britain and France retreated, due to heavy _________ artillery fire.
13. This type of gas was used in the first German attacks on Allied territory.
14. In 1917, Russia signed a peace treaty with Germany, due to internal divisions and revolutions.

1. Britain's _______________ was the first of a class of large steam-powered battleships.
2. The Central Powers consisted of _______, Austria-Hungary, and Italy.
3. A type of German artillery used to attack trenches. The Big Bertha _________ was one of the biggest ________ of the war. It was capable of shooting shells that weighed approximately 1,984 lbs.
4. The Triple Entente consisted of ________, France, and Russia.
5. Huge, gas-filled airships used in the German air force.
7. Created by the French, this fighter plane was one of the first Allied fighter planes capable of countering German air superiority.
8. Germany began to fight World War 1 according to an aggressive military strategy known as the ___________.
10. In_____ The end of the war was in sigh, as German allies surrendered. In early November of 1918, the Allies had broken through the Western Front, causing Germany to surrender, and, hence, the end World War 1.
13. The Battle of ________ was an Allied attack to destroy and break through the Hindenburg Line.