World War I

1. Soldiers regularly changed into dry _____ to prevent the onset of trench foot.
6. The city in which the spark of the war took place was ________.
8. A serious case of trench foot could lead to ________.
9. Made with harmful chemicals, ___ was a chemical weapon intended to be inhaled by opposing soldiers.
10. The system of _________ between countries led to the involvement of many countries in the war and a long chain reaction.

2. Germany's unrestricted ________ warfare pushed America towards getting involved in the war.
3. A _______ nationalist assassinated Archduke Franz Ferdinand and his wife Sophie.
4. _________ was a disease experienced by many WWI soldiers that caused severe diarrhea and pain.
5. Archduke _____ Ferdinand was assassinated, which sparked the war.
7. Annoying ____ invaded the trenches and stole soldiers' food.