WW1

2. chemical weapon used in WW1.
4. These weapons fire a very fast stream of bullets for a long time (500-600 bullets/min).
5. A deadlock in which neither side is able to defeat the other.
6. Mass Production techniques for the war.
8. German submarines; a new weapon of the war; convoys were used to stop them.
11. The system in Europe was one of the major cause of World War 1.
13. The alliance of Germany, the Austro-Hungarian Empire, and Italy prior to WW1.
14. Area between the trenches in World War I, filled with barbed wire.
16. his death was one of the cause of WW1.
17. heavy armored vehicle which could travel over barbed wire and across enemy trenches.
18. dirigible bombers that could level buildings in seconds.

1. certificates sold by the US government to pay for the war.
3. A demand or threat that is final.
5. flu pandemic that killed millions.
7. A temporary peace agreement to end fighting.
9. alliances, nationalism, imperialism, and assassination.
10. Treaty that ended WW I. It blamed Germany for WW I and handed down harsh punishment.
12. The alliance of France, Russia, and Great Britain prior to WW1.
13. A conflict in which the countries devote all their resources to the war effort.
15. Ideas spread to influence public opinion.