1. There was great nationalism and there was a lot of alliances 2. The assasination of Arch Duke Franz Ferdinand 3. The central powers and the Allied powers 4. There was the tank, and trench warfare 5. They wanted to stay out of it 6. Was a British ship that was sank which lead to US joining the war 7. A revolution to turn the country into communism 8. Because many innocent lives were lost on the Lusitania 9. 10. 11. 12 13. 14. Not sure 15. It was the communist Russia 16. The signing of the treaty of Versailles 17. I’m not sure 18. The treaty to end ww1 19. A group that wasn’t successful they tried to be the UN 20. Because they didn’t agree with blaming only Germany
