World War I

2. each side dug ___________ to fight this war which cost millions of lives to gain little to no land
3. this country originally was allied with the Central Powers but then switched to the Allies
6. this alliance originally included Austria-Hungary, Germany, Italy, and the Ottoman Empire
7. the _________front was between the border of France and Germany and Belgium and Germany
8. nicknamed the "powder keg of Europe"
10. the causes of World War I spell this word
12. Switzerland was a _________ country in the war, meaning it didn't join either side
13. major countries built empires around the world and controlled them
14. triple ____________ made up of Russia, France and Britain
17. massive buildup of weapons and armed forces to protect empires
18. triple ____________ made up of Germany, Austria-Hungary, and Italy

1. the act of killing someone which in this case sparked a world war
4. Archduke Franz ________________ was the heir to the Austrian-Hungarian throne, his death sparked the beginning of the war
5. city where the archduke was killed
9. intense pride in one's country
11. when one or more countries make agreements with each other for protection
15. country that did not want to be controlled by Austria- Hungary
16. everyone thought the Central Powers would invade through France, instead they invaded through this country